Took out MAF screen!
I'm "Apache" a psycho dog
Joined: Jan 2001
Posts: 3,085
Likes: 31
From: N.J.
Re: Took out MAF screen! (chuckster)
Anyone have any pinging issues after this mod? Just did a full throttle run, and noticed very loud and obvious pinging in 1st all the way to redline, dont recall that before, i also did the 178* thermo at the same time, any thoughts?
Le Mans Master
Joined: Jul 2000
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From: Fort Worth Texas
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Re: Took out MAF screen! (Rob 99)
Anyone have any pinging issues after this mod? Just did a full throttle run, and noticed very loud and obvious pinging in 1st all the way to redline, dont recall that before, i also did the 178* thermo at the same time, any thoughts?
Melting Slicks
Joined: Jul 2000
Posts: 2,722
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From: Phoenix AZ
Re: Took out MAF screen! (Scott97)
Other than the screen being out, is there a difference in the 2002 MAF in the LS6 vs. the LS1. I would rather purchase the 2002 MAF from the LS6 and have the 2002 LS1 in hand if I do encounter any issues.
I purchased a removed sceen, ported polished version that I installed in my '98. Had no issues until I put in fog light screens, PRT's and TPIS headers. After that I got slight surging while idling until the car warmed up. Don't know if these mods had anything to do with it.
I purchased a removed sceen, ported polished version that I installed in my '98. Had no issues until I put in fog light screens, PRT's and TPIS headers. After that I got slight surging while idling until the car warmed up. Don't know if these mods had anything to do with it.
Race Director
Joined: Mar 2000
Posts: 17,602
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From: Palm City Florida
Re: Took out MAF screen! (Rob 99)
Anyone have any pinging issues after this mod? Just did a full throttle run, and noticed very loud and obvious pinging in 1st all the way to redline, dont recall that before, i also did the 178* thermo at the same time, any thoughts?
Let the PCM try to relearn it.. If you still get knock then it's time for a MAFT... :smash:
Team Owner
Joined: Apr 2001
Posts: 54,204
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From: S.W. Ohio. . . . . . NRA Life Member
Re: Took out MAF screen! (Rob 99)
Other than the screen being out, is there a difference in the 2002 MAF in the LS6 vs. the LS1.
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Le Mans Master
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From: Fort Worth Texas
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Re: Took out MAF screen! (Rob 99)
MAFT? -T as in tuner?
MAFT = MAF Translator (A product made by Mike Licht of Modern Muscle Car, which is now ramchargers.com. A MAFT allows the user to modify the signal of the MAF before it enters the PCM so that you can change the perceived load on the motor).
Le Mans Master
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From: Fort Worth Texas
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Re: Took out MAF screen! (Rob 99)
Id say after a fill up or two.
If that doesnt solve your problem, I would reset the PCM. usually not needed since the PCM learns over time, but I have seem them be bugers longer than they should be about relearning.
If it persists, then I would use autotap to diagnose it and see where the fuel trims, airfuel ratio, and KR is at. Tuning with a MAFT or LS1Edit etc, may be the solution.
If that doesnt solve your problem, I would reset the PCM. usually not needed since the PCM learns over time, but I have seem them be bugers longer than they should be about relearning.
If it persists, then I would use autotap to diagnose it and see where the fuel trims, airfuel ratio, and KR is at. Tuning with a MAFT or LS1Edit etc, may be the solution.
Drifting
Joined: May 1999
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From: Chicago IL
Re: Took out MAF screen! (Speide)
Just an fyi. I have 2000 coupe and had aftermarket maf (without air foil/screen). I ran autotap before and after and I actually noticed DECREASE in airflow by using aftermarket maf. I think there was too much air flow/turbulence and the computer couldn't read the correct air flow.
Team Owner
Joined: Feb 2000
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From: Texas
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Re: Took out MAF screen! (sbkim)
I removed my screens as part of the install of the TRIC w/ nylon MAF ends. My dyno numbers are pretty good for the minor mods that I have. Dyno was done at MTI.
Pro
Joined: May 2000
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From: Gulf coast FL
Re: Took out MAF screen! (Caveboy)
Steve Cole recommended to NOT remove the screen when I ordered my Powerloader. I am not sure what would happen if I took it off now that the Powerloader has been programmed for the screen to be present. Does anyone know?
Race Director
Joined: Mar 2000
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From: Palm City Florida
Re: Took out MAF screen! (Alesnik-MD)
Steve Cole recommended to NOT remove the screen when I ordered my Powerloader. I am not sure what would happen if I took it off now that the Powerloader has been programmed for the screen to be present. Does anyone know?
Melting Slicks
Joined: Jun 2001
Posts: 2,565
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From: Chicagoland Illinois
Re: Took out MAF screen! (chuckster)
Steve Cole recommended to NOT remove the screen when I ordered my Powerloader. I am not sure what would happen if I took it off now that the Powerloader has been programmed for the screen to be present. Does anyone know?
The reason Steve Cole says not to remove it is because every car acts differently when it's gone... He programs for the average mods on the average car. Since he is not there to do full tune he has no way to know if the screen will adversly affect his progam..
The reason Steve Cole says not to remove it is because every car acts differently when it's gone... He programs for the average mods on the average car. Since he is not there to do full tune he has no way to know if the screen will adversly affect his progam..
Racer
Joined: Jun 2000
Posts: 297
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From: Carrollton, TX
Re: Took out MAF screen! (NXVette)
you don't remove the maf screen to get more air into the motor. You remove the maf screen to change the readings and essentially provide a leaner A/F.
The maf screen is there for laminar airflow and to keep junk from getting on the elements.
The maf screen is there for laminar airflow and to keep junk from getting on the elements.
Le Mans Master
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From: Fort Worth Texas
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Re: Took out MAF screen! (HP-GURU)
you don't remove the maf screen to get more air into the motor. You remove the maf screen to change the readings and essentially provide a leaner A/F.
The maf screen is there for laminar airflow and to keep junk from getting on the elements.
The maf screen is there for laminar airflow and to keep junk from getting on the elements.
"GM did what many have been doing for years with MAFs–remove the air flow straightener or "screen". What took them so long to figure that one out? The LS6 is not GM’s only application of that MAF. Any use of it with an air intake duct that curves just before the MAF (typical of most trucks), needs the straightener for the MAF to sense accurately and GM’s conventional wisdom was to leave it in on Corvettes. In part, the essence of the ruthless pursuit of power is whipping conventional wisdom which was, according to Dr. John, "....you gotta have it in there."
With the Corvette’s relatively straight passage between the air filter box and the MAF, the straightener isn’t needed. Juriga told us it wasn’t until the MY02 development that his people looked at that MAF in a Corvette-specific perspective. "The questions we continually ask are: ‘Do we need it?’, ‘What’s next?’ and ‘What if?’
The two MAFs, screened and unscreened. That GM has done this for ’02 ought to prompt the folks who’ve yet to do it to older Gen IIIs to remove their screens. Removing the screen and using the ’02 air filter box together gets about 5hp at airflow levels such as the LS6’s."
