[Z06] You may have a "weak" maf sensor causeing hesitation or other unwanted effects
I am going to check mine tomorrow. I am having the described issues.
09-26-2011, 10:40 AM
#44
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I have not but if you are having an issue this still may be the solution
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Patrick Trageser
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1-484-334-8833
10-07-2011, 11:34 PM
#49
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10-09-2011, 01:31 PM
#51
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For what it's worth, here's my feedback. My '07 Z had an "M" sensor so I ordered a replacement. After retuning, the MAF curve shows increasingly greater flow on both the high and low MAF tables. This doesn't mean the car is actually moving more air, just that at the same Hz the new tables show there is more flow compared to the old sensor. The car seems to be performing very well, but it is somewhat cooler than when I was last testing.
10-10-2011, 09:51 AM
#52
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For what it's worth, here's my feedback. My '07 Z had an "M" sensor so I ordered a replacement. After retuning, the MAF curve shows increasingly greater flow on both the high and low MAF tables. This doesn't mean the car is actually moving more air, just that at the same Hz the new tables show there is more flow compared to the old sensor. The car seems to be performing very well, but it is somewhat cooler than when I was last testing.
10-21-2011, 09:42 AM
#56
Race Director
That basically means that the MAF sensor itself is not the issue. The root cause is because one, the GM MAF sensor is a calibrated device made to work with the stock air box. If one deviates from the design then of course the sensor won't be telling the PCM the correct information. This is because higher flowing intakes that differ from a stock unit will have a larger cross section area or in otherwords a much larger ID in tube size, a larger bore means that the velocity or speed of the air flowing across the sensor will slow down thus the lower reported signal to the PCM. So the engine actually sees the same amount of air but the sensor reports a lower flow rate, then the primary o2 sensor says "WTF 
we are lean give me more fuel" the PCM complies and raises the long term fuel trims to compensate. In a nut shell that is whats going on. Just my two bits.....
we are lean give me more fuel" the PCM complies and raises the long term fuel trims to compensate. In a nut shell that is whats going on. Just my two bits.....I have not looked to see what MAF I have yet, car is in storage now but I want to check for sure. Jim got pissed at me last year because I posted a question here about this without asking him first
My issue was/is on that particular intake it says "no tuning required" , and there were a few other folks with the same problem, I ended up just pulling the intake back off and putting the stock one back on.For what it's worth, here's my feedback. My '07 Z had an "M" sensor so I ordered a replacement. After retuning, the MAF curve shows increasingly greater flow on both the high and low MAF tables. This doesn't mean the car is actually moving more air, just that at the same Hz the new tables show there is more flow compared to the old sensor. The car seems to be performing very well, but it is somewhat cooler than when I was last testing.
Last edited by FrankTank; 10-21-2011 at 09:21 PM.
10-26-2011, 12:05 AM
#59
Melting Slicks
10-26-2011, 08:05 AM
#60
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