ZO6 MAF flow numbers
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Joined: Mar 2001
Posts: 2,667
From: SLC, UT
Re: ZO6 MAF flow numbers
this is true, but the trick is getting the LT1 PCM to read the Z06 MAF at those flow readings. The Pulse timing at that flow rate is way too high for the stock LT1 PCM to read.
Thread Starter
Registered User
Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Re: ZO6 MAF flow numbers
Mine did NOT have a screen on it from when I ordered it. I know some do. Not sure why that is the case, but it was measured without.
It makes no difference to me how the PCM scales the MAF tables. I used the converted tables that are floating around this board, and I believe it maxes at 355 CFM, or there abouts. However, it makes no difference at WOT (on a obd1 car at least, no experience with 2), which is where you will be seeing those numbers anyways. I would actually make the argument that the ZO6 is BETTER for part throttle driving as it is more accurate (less spread out CFM per hertz range). On a supercharged car/turbo car, this will be an issue if you max the MAF and arent in PE.
The stock LT1 meter is 3.5 inches. The Zo6 is just shy of 4 (3 7/8 ish). However, the center air divider in the ZO6 is much more stream lined and thinner than the LT1.
It makes no difference to me how the PCM scales the MAF tables. I used the converted tables that are floating around this board, and I believe it maxes at 355 CFM, or there abouts. However, it makes no difference at WOT (on a obd1 car at least, no experience with 2), which is where you will be seeing those numbers anyways. I would actually make the argument that the ZO6 is BETTER for part throttle driving as it is more accurate (less spread out CFM per hertz range). On a supercharged car/turbo car, this will be an issue if you max the MAF and arent in PE.
The stock LT1 meter is 3.5 inches. The Zo6 is just shy of 4 (3 7/8 ish). However, the center air divider in the ZO6 is much more stream lined and thinner than the LT1.
Registered User
Joined: Mar 2001
Posts: 2,667
From: SLC, UT
Re: ZO6 MAF flow numbers
The tables are mine, trust me, I've been running this MAF since 2001 when it first came out. I know the benifits and draw-backs. 
It makes no difference for a N/A close to stock car, but when the HP number increase and the flow-rates increase is where the issues can develop, Ex: Blown/turbo'd applications where they are still using the MAF like you stated.
The factory Z06 MAF does NOT have the screen, GM deemed it not necessary for the intake design of the Z06 Vette intake track.
It makes no difference for a N/A close to stock car, but when the HP number increase and the flow-rates increase is where the issues can develop, Ex: Blown/turbo'd applications where they are still using the MAF like you stated.
The factory Z06 MAF does NOT have the screen, GM deemed it not necessary for the intake design of the Z06 Vette intake track.
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Joined: Sep 2003
Posts: 5,907
From: The Wild West
Re: ZO6 MAF flow numbers
So when is the Z06 MAF recommended? Or is it at all? I am looking at maxing out my bolt ons before doing a cam, then heads. Would this be a worthy upgrade for some extra ponies?
-Dustin-
-Dustin-
Thread Starter
Registered User
Joined: Feb 2001
Posts: 3,068
From: Cincinnati, Ohio
Re: ZO6 MAF flow numbers
I guess it depends on the stock MAF cfm. I dont have an unmolested one laying around though.
For me I have a 90mm throttle body, 4 inch intake tubing, 4 inch KN etc etc.
Didnt make much sense to leave the 3.5 inch MAF in there.
For me I have a 90mm throttle body, 4 inch intake tubing, 4 inch KN etc etc.
Didnt make much sense to leave the 3.5 inch MAF in there.
Registered User
Joined: Sep 2003
Posts: 5,907
From: The Wild West
Re: ZO6 MAF flow numbers
True, I wish I still had my extra lying around cause I'd donate it for the sake of science. Someone needs to flow bench a stocker with screen. I wonder if its somewhere on this site, time to search.
-Dustin-
-Dustin-
Registered User
Joined: Mar 2001
Posts: 2,667
From: SLC, UT
Re: ZO6 MAF flow numbers
The stock MAF is not a restriction until you are in a Blown application, this is the only time I've ever seen an issue where the MAF becomes a problem. Until that point the stock MAF is a good piece.
I do not recommend this as a "performance" upgrade by any means. I originally did mine because of the replacement costs. The Stock LT1 MAF cost somewheres in the range of $300, whereas the factory Z06 MAF costs about $120 plus the adapter pigtail ~$20; thus about 1/2 the price of replacing my MAF which failed.
There are other issues with using this MAF on a lot of cars. Due to the increased diameter it won't fit most CAI's without some custom work yet alone the stock location without some customizing.
I do not recommend this as a "performance" upgrade by any means. I originally did mine because of the replacement costs. The Stock LT1 MAF cost somewheres in the range of $300, whereas the factory Z06 MAF costs about $120 plus the adapter pigtail ~$20; thus about 1/2 the price of replacing my MAF which failed.
There are other issues with using this MAF on a lot of cars. Due to the increased diameter it won't fit most CAI's without some custom work yet alone the stock location without some customizing.