Corvette C6 Granatelli MAF Sensor
Thread Starter
Melting Slicks
Joined: Dec 2005
Posts: 2,046
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From: Central Florida
Corvette C6 Granatelli MAF Sensor
Anybody added the Granatelli MAF Sensor to their engine. Is this a gimmick or did you notice a difference in mileage and performance as advertised?
Melting Slicks
Joined: Sep 2007
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From: READING PA
St. Jude Donor '08-'09-'10
Team Owner
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From: Northern NYs Adirondack Mountains,http://www.visitsacandaga.com.
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Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
GMHT tested the Summit version one and found 5-6rwhp on an LS2 GTO and no adverse side effects to the PCM, FYI. It may not be worth the hassle if your car is already tuned, even though they are supposed to be calibrated to a CIA
Le Mans Master
Joined: Jan 2003
Posts: 8,596
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From: Portland Oregon
They maybe (highly unlikely) calibrated to a CIA but I really doubt that they are anywhere near the correct cal for the PCM. From all of the aftermarket MAFs I have seen installed in GM cars and trucks that have come to me for dyno tuning, NOT ONE was even close, and if memory recals, Granatelli, and JET were the worst offenders. They may not set a DTC meaning that there isn't an adverse effect on the PCM, but I can GURANTEE you that the fuel trims will be skewed by a considerable amount.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Seems like I read somewhere that they fool the PCM into thinking the IAT's or engine temps were cooler. PCM would add more fuel for a slight bump in HP under some conditions. $ better spent on a good tune.
Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
They maybe (highly unlikely) calibrated to a CIA but I really doubt that they are anywhere near the correct cal for the PCM. From all of the aftermarket MAFs I have seen installed in GM cars and trucks that have come to me for dyno tuning, NOT ONE was even close, and if memory recals, Granatelli, and JET were the worst offenders. They may not set a DTC meaning that there isn't an adverse effect on the PCM, but I can GURANTEE you that the fuel trims will be skewed by a considerable amount.
Maybe Summit has done a better job on the ft's than the others
Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
Im not going to banter about the maf, I just happened to read the article a few days ago so it was fresh on my mind. Here is the pic
Here is the article.
http://www.gmhightechperformance.com.../photo_05.html
Come to your own conclusion but most importantly, learn about it.
Here is the article.
http://www.gmhightechperformance.com.../photo_05.html
Come to your own conclusion but most importantly, learn about it.
Melting Slicks
Joined: Jul 2007
Posts: 2,052
Likes: 14
CAI- Cold Air Intake (filter AND tube assebly, not just a replacement K+N filter)
GMHT- GM Hi-Tech mag - Great resource
DTC - Diagnostic Trouble Code (check engine light)
Race Director
Joined: Apr 2008
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From: Chatsworth California
Race Director
Joined: Apr 2008
Posts: 17,373
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From: Chatsworth California
Melting Slicks
Joined: Sep 2003
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From: Central Coast CA
Melting Slicks
Joined: Feb 2004
Posts: 3,307
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From: Tucson AZ
I bought a Granatelli MAF for my C4 and it kept setting MAF codes. I called them several times and even carried a small screwdriver with me for a couple of days to adjust it. I ended up returning it. My opinion is they are not worth the card board they come wrapped in.
