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Discussion Starter #1
I need some help with my backfire.

I have a '94 automatic BPU+ car.

It backfires when the tranny shifts from 1st to 2nd at redline. This all started when I installed my downpipe. It seems to be less pronounced when I have the silencer installed on my exhaust.

What can I do to get rid of the backfire?

Any thoughts appreciated.

Thanks,

Adam
 
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Discussion Starter #2
Reed said:
I need some help with my backfire.

I have a '94 automatic BPU+ car.

It backfires when the tranny shifts from 1st to 2nd at redline. This all started when I installed my downpipe. It seems to be less pronounced when I have the silencer installed on my exhaust.

What can I do to get rid of the backfire?

Any thoughts appreciated.

Thanks,

Adam
why you want to get rid of it? Just the car is running "rich".

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Discussion Starter #4
Fuel piggy back systems like the HKS Super AFR actually can compensate for this problem, or you can run both the stock BOV and the aftermarket BOV.
 
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