Going from SD back to MAF? Tune file attached for viewing also

[Power Surge]

I have an 02 WS6, it's my personal car. I bought it from a friend of mine. The car has been previously tuned in speed density. I have no idea who tuned it. There do not seem to be any engine mods to the car. Still has stock headers/cats, with an aftermarket cat back. I see no other mods, aside from the missing MAF.

I am thinking of going back to the stock MAF and stock tune (or at least starting fresh tuning with a stock tune).

I'm not a GM guy, but I think I have read something about you have to do something with the PCM when going from MAF to SD.

Can I just flash a stock tune file in to go back to MAF? Or is there something special I need to do?

The "tuned" SD file is attached if anyone wants to comment on it.

[SiriusC1024]

To run with MAF set to stock values:

Engine Diag>Airflow>MAF Frequency Fail
Engine Diag>DTC>P0101, P0102, P0103 to stock
Engine>Airflow>Dynamic>High RPM Disable

To tune MAF set High RPM Disable to something like low 200rpm.

[Alvin]

You can download a stock tune from the repository and compare.

Often the high octane table is copied into the low octane.


I wonder why they put it in SD in the first place.. I've done it on stock cammed/just bolt on cars for some track cars as they are more consistent as the MAF ages/fouls and I've done it for customers who have a bad MAF..

[gametech]

Going from a speed density (SD) tune back to a mass airflow (MAF) setup on your 2002 Pontiac Firebird WS6 can be a bit involved, but it's certainly doable.

That is literally one of the simplest tuning chores a person can undertake. Physically reinstalling the MAF is the only part that may be an issue.

[blindsquirrel]

That is literally one of the simplest tuning chores a person can undertake. Physically reinstalling the MAF is the only part that may be an issue.

It's a spambot.

[Bill@HPTuners]

It's a spambot.

Thank you for pointing these out, you should be able to report these posts directly in the future so they get removed as does the user

[SiriusC1024]

Ok good to know.

[blindsquirrel]

I did report it. Somebody was trying to talk to it though, not realizing what it was.