Stock MAF tune vs. SLP 85mm MAF tune
01-18-2007, 09:16 AM
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Stock MAF tune vs. SLP 85mm MAF tune My car has an SLP Maf on it. I had it mail order tuned before I got HP tuners to get a baseline tune for my cam. Tune works good but with my new tuning software I've noticed that the the Maf tune is the same as a factory set up. Anyone got a good Maf tune for this sensor or should the tune be left stock. Any help would be greatly appreciated!
01-18-2007, 11:42 AM
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The SLP MAFs claim to not need tuning yet produce HP
gains. Flow, blah blah blah, puffy sticker. But nobody
seems to know what the true SLP MAF freq/flow curve
is. The intent for the "'01-'02" version is to match the
factory piece "well enough". So you'd probably just leave
it alone unless you have good error data to work against.
Or take out the cobble-action and use the truck table.
At least there you have Delphi/GM representing what it is.
If it isn't bothering you (LTFTs and WOT mixture) then it
can be left alone. Though the fakery and the screen both
had to go, I thought, and no prob about that.
gains. Flow, blah blah blah, puffy sticker. But nobody
seems to know what the true SLP MAF freq/flow curve
is. The intent for the "'01-'02" version is to match the
factory piece "well enough". So you'd probably just leave
it alone unless you have good error data to work against.
Or take out the cobble-action and use the truck table.
At least there you have Delphi/GM representing what it is.
If it isn't bothering you (LTFTs and WOT mixture) then it
can be left alone. Though the fakery and the screen both
had to go, I thought, and no prob about that.
01-19-2007, 09:08 AM
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Thanks for the information and help! I guess that I will just leave it the way it is. Don't think that it is hurting it, just wondered if it could be improved upon. jimmyblue, do you have any pics of your modified Maf?
01-19-2007, 09:40 AM
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Originally Posted by jimmyblue
The SLP MAFs claim to not need tuning yet produce HP
gains. Flow, blah blah blah, puffy sticker. But nobody
seems to know what the true SLP MAF freq/flow curve
is. The intent for the "'01-'02" version is to match the
factory piece "well enough". So you'd probably just leave
it alone unless you have good error data to work against.
Or take out the cobble-action and use the truck table.
At least there you have Delphi/GM representing what it is.
If it isn't bothering you (LTFTs and WOT mixture) then it
can be left alone. Though the fakery and the screen both
had to go, I thought, and no prob about that.
gains. Flow, blah blah blah, puffy sticker. But nobody
seems to know what the true SLP MAF freq/flow curve
is. The intent for the "'01-'02" version is to match the
factory piece "well enough". So you'd probably just leave
it alone unless you have good error data to work against.
Or take out the cobble-action and use the truck table.
At least there you have Delphi/GM representing what it is.
If it isn't bothering you (LTFTs and WOT mixture) then it
can be left alone. Though the fakery and the screen both
had to go, I thought, and no prob about that.
the SLP 85mm and the factory 3pin aluminum MAF have the total highest dynamic range of the factory MAF. Removing the resistor is just like getting a 01 up truck maf with a screen. Not a bad peice but a bit shy on the dynamic range for FI cars and Big cube engines.
My advice is to get on a dyno and fine tune the AFR with the MAF tables a bit if it suits your fancy.
01-19-2007, 10:37 AM
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Originally Posted by BlkT/A01
I got a ? will the 98-99 slp MAF fit on a 01 ws6??? and will it hurt it???
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01-19-2007, 10:44 AM
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'98-'00 so-called model is biased a bit leaner so you
might see some ping. That's about it. Whether lean
helps WOT or not, depends on what the PCM does
to fuel trims as a result of any MAF scale / bias error.
A near-stock motor is going to draw well below max
airflow for the base 85mm piece. I only see 10kHz max
out of mine.
might see some ping. That's about it. Whether lean
helps WOT or not, depends on what the PCM does
to fuel trims as a result of any MAF scale / bias error.
A near-stock motor is going to draw well below max
airflow for the base 85mm piece. I only see 10kHz max
out of mine.
