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Best cold air intake...
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
Le Mans Master
Joined: Aug 2008
Posts: 5,578
Likes: 61
From: Austin TX
The Volant looks like a superior design and quality over the similar vararam. It has a bigger and better filter too. The Volant is very new, so reviews are scarce (is any). Get the Volant.
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Vararam
Here lotsa complaints 7 for the life of me I'll never understand. Easy to install, to clean & maintain, tight seal, no debris northside of filter ever & year can hear whine as it pulls AIR UNLIKE ANY OTHER!
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
Noise has nothing to do with the amount of air an intake can digest. The LS7 and the LS3 have identical intakes that that flow the same, but, the LS3 has a silencer attached to make it quieter then the intake on the LS7. You can remove the silencer on the LS3 and plug the hole, to make it louder, but it won't make it flow any better then before.
Instructor
Joined: Jul 2010
Posts: 146
Likes: 0
From: Thousand Oaks California
Cold Air Intake
I have tried something that might be of interest to you and others....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%.
The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%.
The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
Instructor
Joined: Jul 2010
Posts: 146
Likes: 0
From: Thousand Oaks California
Cold Air Intake
I have tried something that might be of interest to you and others....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%.
The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%.
The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
Melting Slicks
Joined: Aug 2010
Posts: 3,063
Likes: 82
From: Tumwater, WA
I have tried something that might be of interest to you and others....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%. The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%. The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
Did the vette scoop have a screen at the end of it to help straighten out the airflow and possibly help prevent the surging?
Are you sure the surging wasnt from using a bigger MAF? I did a bigger MAF on a car without it being tuned for it and it messed things up a bit.
So right now you are using a Z06 intake with the vette scoop and now have no surging and alot lower air temps?
Thanks.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
I have tried something that might be of interest to you and others....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%.
The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
I have a 2007 C6 Z51. Regarding the intake, these were the changes made that I found to have positive results.....
I felt the stock intake restrictive as well as the MAF sensor and wanted to change those. I first put on a K&N intake. The carbon fiber looked nice, but in the end...that was it. I also changed the MAF and went to Granatelli's unit. When there, I also purchased O-Ohm wires and hotter coils. I will say that Joe was very helpful and personally installed all items while I watched. When I drove out of there, the car pulled at a night and day difference. Unfortunately, after about a day of driving, on comes the engine light. I went back, they soldered on a diode. The light went away, however, the engine, I am assuming was pulling like it was as it was leaner, no longer pulled like it did. I still felt more power but not at all the same.
I finally opted for an intake set up that Chevy spent thousands of dollars and hours invested in testing..... the Z06/LS3 intake. With some testing I found that I was sucking in air at 140 degrees while stationary and approx. 110 degrees while moving. Air flow was only at 75% for my LS2, and that was while using the ZR1 filter which flowed the best up to that point, while a stock LS3/Z06 pulls in air at 96-99%.
I had to decrease air temp as engine timing was being pulled. I installed the Vette-Air scoop. Air temp now decreased to around 86 degrees while stationary and 79 degrees while moving. I believe heat transfer from the engine was why it never seemed to get any cooler. By the way, outside air temp was approx. 70 degrees. I changed the air filter to the Blue Attack/Mamba type re-usable filter and air flow now increased to 86%.
The next problem was surging while cruising, too much air turbulence I suspect because of the scoop. That was resolved primarily by blocking a portion of the inflow from the scoop as air was being rammed in. Is there an unknown problem with my engine regarding only getting 86% airflow? As yet, I do not know. Some tuning was also done by the way, and that is still an ongoing process. Regardless, with this set up as yet, my vette pulls better than it ever did. A night and day difference from what I started with.
Mods done on this car have been, Intake as discussed, polished opening of the throttle body, elilte engineering's oil catch can, and by the way, that has added to the cars performance slightly.....previously the MAP sensor was blocked with oil, but just knowing I no longer have oil in the intake is nice along with cleaner exhaust tips, and a cat back exhaust system from Granatelli, which I dont think too many people know about, reasonably priced, sounds incredible and with 4" angled tips looks awesome. And an upgrade to two-piece rotors from Baer, and as already mentioned...engine tuning.
I hope this helps yourself along with a few others. I am always looking for tips to improve performance myself and appreciate useable feedback. My real goal is to supercharge this car...some day.
Best regards....
I wasn't looking for additional horsepower, but also was trying to decrease the IAT to keep from so much timing being pulled, which lowers horsepower.
I think the Vette-Air is worth the money, but I strongly suggest that those who are interested in one, install a diffuser plate on the first go around and save yourself some hassle by not having to go back and add it. Even if the surging isn't really noticeable and you are not getting a CEL, a little surging is an indication that the MAF is not able to do it's job 100% and it is hurting the cars performance.
My first diffuser design cut the surging significantly and eliminated the CEL and "Service Active Handling" & "Service Traction Control" warnings on the DIC, but the car still was not quite right. The exhaust didn't sound right and the gas mileage was down. The next design diffuser I installed, cleared all the problems, the exhaust sounded crisp and the gas mileage went back to where it was before; 30+ MPG crusing on the Interstate at 70 MPH.
I think Vette-Air would be wise to include a diffuser plate with the Vette-Air scoop, or even a paper template so one can duplicate without the trail & error of designing their own. Mine is a 1/8" Plexiglas sheet 3.5" X 18" sealed to the bumper beam on the leading edge with 1/8" ID vacuum hose(slit lengthwise) and the rear of the plate has to be shaped to fit the curves of the radiator baffle(shroud). Jigsaw, drill, and a sanding block is all it takes along with about 30 minutes added to the Vette-Air's installation time.
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Instructor
Joined: Jul 2010
Posts: 146
Likes: 0
From: Thousand Oaks California
86% of what? Are you saying 86% of what it should take in? If so how do you know how much it should take in? Ive asked in other threads how much a LS3 base vette intake wants at WOT but have got no answers. So Im curious as to 86% of what?
Did the vette scoop have a screen at the end of it to help straighten out the airflow and possibly help prevent the surging?
Are you sure the surging wasnt from using a bigger MAF? I did a bigger MAF on a car without it being tuned for it and it messed things up a bit.
So right now you are using a Z06 intake with the vette scoop and now have no surging and alot lower air temps?
Thanks.
Did the vette scoop have a screen at the end of it to help straighten out the airflow and possibly help prevent the surging?
Are you sure the surging wasnt from using a bigger MAF? I did a bigger MAF on a car without it being tuned for it and it messed things up a bit.
So right now you are using a Z06 intake with the vette scoop and now have no surging and alot lower air temps?
Thanks.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
Testing with an HP tuner showed 86% air flow at WOT. Yes, I am using the Z06/LS3 intake with the Vette-Air scoop and do not have surging. I did have to block off/diffuse the air flow. I am working on a diffuser that will be cut out of thin metal and will bolt on two the upper two mounting bolts that support the scoop. I have not checked HP on a dyno as I do not have one available without charge. The car pulls amazingly well with this set up an the air intake temperatures have decreased dramatically......
Instructor
Joined: Jul 2010
Posts: 146
Likes: 0
From: Thousand Oaks California
I am having another diffuser being made for me now. I am trying to vary the opening sizes so that I can get as much of the rammed air as possible without incurring an issue with surging. It also connects to the existing mounting bolts of the scoop. I will let the results be known as soon as possible. The main problem of sucking in air that is rediculously hot has been resolved....
Melting Slicks
Joined: Aug 2010
Posts: 3,063
Likes: 82
From: Tumwater, WA
Kinda hard to tell from the pic for me, but the diffuser is a plate that is over the opening but not flush with it that makes the air go around it? Thanks.
Le Mans Master
Joined: Aug 2008
Posts: 5,578
Likes: 61
From: Austin TX
Yep, there is a gap that just keeps the air blast from hitting the filter face directly.
Safety Car
Joined: Nov 2006
Posts: 3,860
Likes: 5
From: Tampa FL
If you install it yourself then PM me and I'll give you some install tips. Also make sure you get a new unit since they are thicker and will not warp.
Instructor
Joined: Jul 2010
Posts: 146
Likes: 0
From: Thousand Oaks California
No, I am not sure at this point why I cant seem to acquire 96-99%. Its weird, and to me it means loss of power.
Burning Brakes
Joined: Jan 2005
Posts: 928
Likes: 18
This is the amount of air filled in the cylinder on the intake stroke.
Example--anything over 1.00 is under boost.
So 1.00 is 1 atmosphere of air per cylinder anything less is less than 1 atmosphere in each cylinder--like .92.
Stock LS2 has high 70's to low 80's between 5000 to 5400rpm
Stock LS3 has mid to upper 80's between 5000 to 5400rpm
Stock LS7 has low to mid 90's between 5000 to 5400rpm
More power comes with more pumping efficiency.
Where this really comes into play is right when you have the highest cylinder pressure, not to mention max torque, is when the ECM pulls all the timing. You might have 18* advance.
These motors are begging from more octane.
My question is Why bolt-on anything unless you address this issue?
R