LT1-LT4 Modifications 1993-97 Gen II Small Block V8

MAF and MAP problems

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Old Oct 14, 2008 | 08:38 PM
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From: SNJ
Default MAF and MAP problems

I recently posted about my 94 trans am gt running like crap, but now it runs pretty good except for 2 little issues. When i have my MAF plugged in i have a great idea but shitty power, but when I run speed density its a beast with a shitty idle. The MAF is a delphi 5 prong plug, which I believe is out of an LS1 car. I have the adapter plug for the 3 to 5 prong harness for MAF plug. I ran a diagnostic on the car and its running at about 11 grams when I heard its susposed to be around 6 grams, and the computer was tuned for a 3.5" f-body MAF. As for the MAP sensor its brand new and is running at 6 volts constantly, and I was also told it should be around 1 at idle. Does anyone have an idea as to what I should do? I'm fairly new to FI cars so I'm not sure as to have the computer retuned or change the sensors. The mods on the car are....

.570/.550 cam
ported heads and intake
30lb svo injectors
52mm bbk TB
CAI
1.6 RR
LT headers,no cat
flowmaster
new GM opti
NGK platinums
Delphi 5 prong plug MAF(which might be the problem)
PCMforless tune
all of the other sensors are stock ones
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