What is the best MAF mod?
Thread Starter
Racer
Joined: Sep 1999
Posts: 323
Likes: 0
From: Little Falls NJ
What is the best MAF mod?
What is the best MAF?
I was seriously considering a Granatelli, but after reading a few posts here I am not sure. Did anyone have any positive results with the Granatelli?
How do you know if the car is running rich or lean? I have seen people saying the car ran too rich with the Granatelli?
I was seriously considering a Granatelli, but after reading a few posts here I am not sure. Did anyone have any positive results with the Granatelli?
How do you know if the car is running rich or lean? I have seen people saying the car ran too rich with the Granatelli?
Le Mans Master
Joined: Nov 2000
Posts: 6,266
Likes: 156
From: Galloway Twp. NJ
Cruise-In VII Veteran
Re: What is the best MAF mod? (Ross78)
How do you know if the car is running rich or lean? I have seen people saying the car ran too rich with the Granatelli?
I have a Granatelli MAF on my car. It got me closer when tuning than the stock MAF w/no screen.
I was running around 18% lean with the stock MAF and no screen, the Granatelli was about 5% rich.
I was MUCH easier to tune out 5% rich that 18% lean. :cheers:
[Modified by RPOZ4Z, 7:48 PM 11/16/2002]
Thread Starter
Racer
Joined: Sep 1999
Posts: 323
Likes: 0
From: Little Falls NJ
Re: What is the best MAF mod? (QuickSilver97)
My car is pretty much stock, except for a Blackwing.
I am just looking to do minor things right now, but would like to add things that would work well in the event that I go the route of changing the cam and heads.
I am just looking to do minor things right now, but would like to add things that would work well in the event that I go the route of changing the cam and heads.
Instructor
Joined: Jun 2002
Posts: 228
Likes: 0
From: Riverside CA
Re: What is the best MAF mod? (ToplessTexan)
The cheapest mod to the MAF that you can do would be to pull the screens. It was worth 3 hp on my friends 2002 Z28. Supposedly it allows greater airflow, less obstruction more airflow go figure, and adds 3 degrees of timing. Goood Luck
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Le Mans Master
Joined: Apr 1999
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From: Burlington ON
Cruise-In I, II, III, IV & V Veteran
CI-I & II Auto-X Champ
Re: What is the best MAF mod? (Chris@SpeedDemon)
If your car is 2001 or newer, just stick with the stock MAF.. I do not feel there is any power hiding out in the MAF sensor on our cars...
If your car is pre-2001, then perhaps think about upgrading to the larger 2001-sized MAF, but even then performance gains will be VERY marginal.
If your car is pre-2001, then perhaps think about upgrading to the larger 2001-sized MAF, but even then performance gains will be VERY marginal.
Burning Brakes
Joined: Aug 2002
Posts: 826
Likes: 29
From: Bonita Springs, FL
Re: What is the best MAF mod? (Ross78)
My 97 C5 has always had a rough idle - nothing wrong with the engine, just rough idle.
I have noticed this as typical on other C5s.
I installed the SLP MAF for performance reasons. Performance gain minimal.
To my surprise my idle smoothed out, I can hardly feel the engine even running. Nice extra!
I have noticed this as typical on other C5s.
I installed the SLP MAF for performance reasons. Performance gain minimal.
To my surprise my idle smoothed out, I can hardly feel the engine even running. Nice extra!
Thread Starter
Racer
Joined: Sep 1999
Posts: 323
Likes: 0
From: Little Falls NJ
Re: What is the best MAF mod? (saber)
After reading the posts. The GMS MAF is no longer a consideration.
I am thinking about the nylon ends that MidAmerica has. They are a bit larger than my stock 99 and would do not have the screen, which a few people suggested to remove.
I am thinking about the nylon ends that MidAmerica has. They are a bit larger than my stock 99 and would do not have the screen, which a few people suggested to remove.
Team Owner
Joined: Apr 2002
Posts: 43,370
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Re: What is the best MAF mod? (Ross78)
http://installuniversity.com/install...afapalooza.htm
Your MAF is hiding horsepower, however whatever gains you get will last for about 40-100 miles until the computer relearns the new settings and makes up for the lean condition that MAF makes. The gains from this mod are permanent if you adjust the computer after the mod. I've never had trouble with this mod on two different cars. More air means more power, and no one can argue with that statement. The MAF flows more air if it's ported and polished.
Your MAF is hiding horsepower, however whatever gains you get will last for about 40-100 miles until the computer relearns the new settings and makes up for the lean condition that MAF makes. The gains from this mod are permanent if you adjust the computer after the mod. I've never had trouble with this mod on two different cars. More air means more power, and no one can argue with that statement. The MAF flows more air if it's ported and polished.
Le Mans Master
Joined: Nov 1999
Posts: 7,695
Likes: 51
From: Imperial Beach CA
Re: What is the best MAF mod? (ToplessTexan)
I agree with Topless and matt, have seen absoluting no gain other than to try and impress someone with all the mods. The engine will take what it wants and that's not your holdup. In fact other things get screwed up.
[Modified by jimman, 2:20 PM 11/25/2002]
[Modified by jimman, 2:20 PM 11/25/2002]
Drifting
Joined: Sep 2001
Posts: 1,651
Likes: 0
From: Ocean County NJ
Re: What is the best MAF mod? (Ross78)
Has anyone just polished their stock MAF? Maybe that would be worthwhile instead of a new one????? I have the BPP MAF with airfoils.....who know what this does if anything...my idle is rough and going to do idle relearn this week and go from there!
Drifting
Joined: Aug 2002
Posts: 1,317
Likes: 0
From: Lancaster CA
Re: What is the best MAF mod? (MattG)
If your car is 2001 or newer, just stick with the stock MAF.. I do not feel there is any power hiding out in the MAF sensor on our cars...
If your car is pre-2001, then perhaps think about upgrading to the larger 2001-sized MAF, but even then performance gains will be VERY marginal.
If your car is pre-2001, then perhaps think about upgrading to the larger 2001-sized MAF, but even then performance gains will be VERY marginal.
I have a 97 with the Granitelli MAF. I didn't dyno before and after but, SOP told me it improved performance on mine. Since then I've had it dyno'd and WOT A/F adjusted. See sig for specs. The only things still stock on the intake side are the manifold and TB. On the exhaust side I still have the stock headers and cats.
:cheers:
Pro
Joined: Apr 1999
Posts: 585
Likes: 0
From: San Francisco, CA USA
Re: What is the best MAF mod? (scool93535)
After reading catalog descriptions and hype, I was nearly convinced that I could gain significant HP from adding the Granitelli (sp) MAF to my '02 C5. After reading several posts in this forum and others I wasn't so sure. I then called West Coast Corvettes. The guy I spoke to said he doesn't even carry MAF sensors for '01 and newer C5's mainly due to the size of the the stock MAF. If anything, he suggested removing the screens. I've decided to return the MAF and leave my stock one alone. My .02. :nonod:
Drifting
Joined: Aug 2002
Posts: 1,317
Likes: 0
From: Lancaster CA
Re: What is the best MAF mod? (Daryl)
After reading catalog descriptions and hype, I was nearly convinced that I could gain significant HP from adding the Granitelli (sp) MAF to my '02 C5. After reading several posts in this forum and others I wasn't so sure. I then called West Coast Corvettes. The guy I spoke to said he doesn't even carry MAF sensors for '01 and newer C5's mainly due to the size of the the stock MAF. If anything, he suggested removing the screens. I've decided to return the MAF and leave my stock one alone. My .02. :nonod:
Race Director
Joined: Mar 2000
Posts: 17,602
Likes: 20
From: Palm City Florida
Re: What is the best MAF mod? (MattG)
If your car is 2001 or newer, just stick with the stock MAF.. I do not feel there is any power hiding out in the MAF sensor on our cars...
If your car is pre-2001, then perhaps think about upgrading to the larger 2001-sized MAF, but even then performance gains will be VERY marginal.
If your car is pre-2001, then perhaps think about upgrading to the larger 2001-sized MAF, but even then performance gains will be VERY marginal.
I now finally believe it's the velocity that the stock MAF offers. Bigger MAF slower air velocity..
Fast air cools the wires faster, thus making for a more agressive A/F
The Bigger MAF ends also caused me k/r problems which drove me nuts! I even argued with people saying that they have nothing to do with K/R.. I was wrong (SORRY). I know know why.....Slower air flow from the bigger MAF made the pcm think there was not much load (even though there is!) ..So in turn the pcm jacks up the timing and Bingo....K/R
Also, I don't know If I agree with just putting the 2001 MAF on a 2000. The MAF table is completely different in a 2001 (as seen in LS1-Edit) The MAF would not be calibrated anymore therefore losing any possible gain.
jmho ;)
[Modified by chuckster, 11:02 PM 11/25/2002]