Difference in MAF size, What years?
Pro
Joined: Jan 2003
Posts: 526
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From: Tampa fl
What would happen if I put the larger 85mm maf into my 99 that currently has the 75mm maf? Would it be plug-n-play or would tuning be required? And if this were combined with the LS6 intake what gains could this yield on an otherwise stock engine?
Safety Car
Joined: Jul 2001
Posts: 4,661
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From: Ocean Springs MS
Originally Posted by corvette Mark
What would happen if I put the larger 85mm maf into my 99 that currently has the 75mm maf? Would it be plug-n-play or would tuning be required? And if this were combined with the LS6 intake what gains could this yield on an otherwise stock engine?
Race Director
Joined: Nov 2001
Posts: 18,682
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St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12
Originally Posted by corvette Mark
What would happen if I put the larger 85mm maf into my 99 that currently has the 75mm maf? Would it be plug-n-play or would tuning be required? And if this were combined with the LS6 intake what gains could this yield on an otherwise stock engine?
I believe you can also buy a calibrated MAF along with the adapter wiring harness if you dont have the tuning software.
Here is a good read on the topic
http://www.ls1howto.com/index.php?article=25
HTHs
Pro
Joined: Jan 2003
Posts: 526
Likes: 0
From: Tampa fl
Originally Posted by FactoryRaceCar
Mark you can put on the larger screenless 02 and up Z 85mm MAF on your '99 but you would have to get a 2001 and up airbridge, wiring adapter harness since the plug is different on 2001 and up than your 99 and most importantly, you will need a tuning or any tuning software like EFI live, LS1 Edit etc to change your PCM's table over to the new MAF table.
I believe you can also buy a calibrated MAF along with the adapter wiring harness if you dont have the tuning software.
Here is a good read on the topic
http://www.ls1howto.com/index.php?article=25
HTHs
I believe you can also buy a calibrated MAF along with the adapter wiring harness if you dont have the tuning software.
Here is a good read on the topic
http://www.ls1howto.com/index.php?article=25
HTHs
Thanks for the link Nouman!
good info!I was thinking of buying the larger (85mm) maf ends to put on my factory maf but from what I read on this link it sounds like that would not match up with the maf tables in the pcm. I like the idea of the 02 screenless maf with larger airbridge. I could acquire the parts and keep them on standby until I do the Ls6 intake and headers and combine all the new parts together with a custom tune. Should I also be looking to upgrade the throttle body or are they all the same?
