Question about 85mm MAF?
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Joined: Mar 2004
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From: Tn
Question about 85mm MAF? When I put the Moser 12 bolt w/4.10's in I lost about 20 hp and tq. I am going to put 30# injectors in. I was wondering if going to a 85mm MAF would bring back some of the power that I lost. Mods are in sig.
The car can only inhale as much air as the TB will let it, if you anly have a 70mm Throttle body (I think that is what stock is) and your stock Maf is around the same size, and bigger maf wouldnt let in any more air because the TB is your bottleneck
Untuned you will screw your mixture with a stock
Z06 or truck MAF, rich; screw it lean with a GMAF.
Two wrongs don't make a right, generally speaking,
but that doesn't stop people from trying.
It's also quite untrue that you gain nothing from
an 85mm MAF and a 70mm TB. Air is a compressible
fluid, not like you're trying to cram an 80mm marble
down it and it'll get stuck or something.
But, whether you'd gain enough to be worth the grief
is another matter. You will need to either solder-tune
a Z06 (or truck) unit, or righteous-tune the tables in
the PCM. Only the latter will have a chance of getting
you right across-the-board, though the former may
get you "good enough" - but even there you'd need at
least scanning capability.
Z06 or truck MAF, rich; screw it lean with a GMAF.
Two wrongs don't make a right, generally speaking,
but that doesn't stop people from trying.
It's also quite untrue that you gain nothing from
an 85mm MAF and a 70mm TB. Air is a compressible
fluid, not like you're trying to cram an 80mm marble
down it and it'll get stuck or something.
But, whether you'd gain enough to be worth the grief
is another matter. You will need to either solder-tune
a Z06 (or truck) unit, or righteous-tune the tables in
the PCM. Only the latter will have a chance of getting
you right across-the-board, though the former may
get you "good enough" - but even there you'd need at
least scanning capability.
Last edited by jimmyblue; Apr 29, 2004 at 04:00 PM.
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