Maxing out MAF sensor
Registered User
Joined: Feb 2003
Posts: 241
From: FL east coast beaches
Re: Maxing out MAF sensor
Originally Posted by SMOKNZ
From what I have herd, and not generally concidered to be true because I haven't taken apart the computer and looked, the circuit consists of 2 256 bit registers giving a theoretical max of 512 gps. I have had mine at 510, and I have logged this reading several times when the MAF is maxed. It occures at the same time as the stock 471gps, however like I said before when the MAF is maxed it adds a little more fuel to the mix as the PCM thinks it is locked at 510 gps of air and not 471. still doesn't get around the fact that tuning still needs to be done in the PE table per RPM to get things right.
Wait, so you are running OBD2 and the MAF is not cutting your fuel in half when it's maxed out at the upper RPMS? Is it or is it not acting like "speed density" all the way up?
Registered User
Joined: Apr 1999
Posts: 1,178
From: Cleveland, WI
Re: Maxing out MAF sensor
Originally Posted by maximumvelocity
Wait, so you are running OBD2 and the MAF is not cutting your fuel in half when it's maxed out at the upper RPMS? Is it or is it not acting like "speed density" all the way up?
Registered User
Joined: Feb 2003
Posts: 241
From: FL east coast beaches
Re: Maxing out MAF sensor
Anyone have any ideas on solving the maxed maf on the OBD2? Is there perhaps another maf out there that maxes much higher that will work? ZO6 MAF? Not lookin to spend the Big $$$ on a pro-m MAF just yet. Tunercat just came out with their new OBD2 software. Perhaps there is something in there wich could help? Anyone with anything?
Registered User
Joined: Feb 1999
Posts: 661
From: Montville, NJ, U.S.A.
Re: Maxing out MAF sensor
Speaking of mass airflow sensors, has anyone ever heard or used this one: Pro M Mass Air Meter I saw it on Ebay, but dont know anything about it. Can anyone shed some light on it?
Nick
Nick
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Joined: Dec 2002
Posts: 752
Re: Maxing out MAF sensor
Originally Posted by SMOKNZ
I increased the GPS reading in the maximum part of MAF table 4 to 510, but it still doesn't change what frequency output of the MAF it maxes out on. Just adds a little more fuel up to the point where it maxes. I haven't checked out the new tunercat file either, so I'll see if anything has changed.
Registered User
Joined: Mar 2002
Posts: 3,082
From: San Juan PR
Re: Maxing out MAF sensor
Originally Posted by TriPinTaZ
in LT1 Edit 2.2 you can change the MAFs frequency fail point. This is what I was talkingabout changing. Changing the MAF tables themselves isnt going to do anything to fix the issue.
Registered User
Joined: Feb 2003
Posts: 241
From: FL east coast beaches
Re: Maxing out MAF sensor
Anyone ever hear of "Mass Airflow Massager" part number MA001I-1 from procharger for 1996-1997 LT1's w/obd2? could this solve the maxing out issue with boost applications???
Registered User
Joined: Apr 2002
Posts: 2,154
From: All around
Re: Maxing out MAF sensor
Very good actually, hence my desire to get this answered.
Only "major" parts I have left to buy are the guages, the ignition system, and the leather door panel skins (doh!). But the ignition system will be determined by how the ECU will be tuned - for example do I get a setup that has built in boost retard, or do I try to leave that to the ECU? Once I know if this was taken care of, I can decide what components I want and order them.
Plan is it will be done by April 4th unless the ignition system is exotic enough to have a longer lead time.
Only "major" parts I have left to buy are the guages, the ignition system, and the leather door panel skins (doh!). But the ignition system will be determined by how the ECU will be tuned - for example do I get a setup that has built in boost retard, or do I try to leave that to the ECU? Once I know if this was taken care of, I can decide what components I want and order them.
Plan is it will be done by April 4th unless the ignition system is exotic enough to have a longer lead time.
Last edited by Geoff Chadwick; Mar 17, 2005 at 01:01 PM.