98 CorvetteLTFT B1+ B2-????

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Jul 21, 2007 | 05:55 PM

99ChargedFRC

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From: Bardstown KY

98 CorvetteLTFT B1+ B2-????

I just started my car for the first time today after the Dart head install and cam. For some reason the car is having a hard time running, I changed the IFR for the 30# injectors. The 02's read rich then they lean themselves out to 0... the odd thing is, most times one side is + and the other side is -. The numbers just keep going up the longer the car runs. Does anyone have any idea what this is?

Jul 21, 2007 | 09:37 PM

99ChargedFRC

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From: Bardstown KY

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Originally Posted by 99ChargedFRC

I pulled the fuse to the heaters tonight and that fixed the problem. But here is the next issue, the o2 MV is right but the fuel trims are wacked. I tried changing the o2 switchpoints but that doesnt seem to do anything. The LTFT goes up to -18 and sits there, it kills the car. Anyone???

Jul 22, 2007 | 09:38 AM

Billiumss

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From: Erie, PA

If your IFR is right, you need to tune the VE table then the MAF table. If you have the stock tune, your way rich at idle (in open loop) due to the VE table.

Need more info about your car and tune before we can help you.

Bill

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