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

Exhaust Question.

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Old 06-10-2014, 05:22 PM
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Default Exhaust Question.

I don't know if anyone has a answer to this question but I want to run a set of pacesetter long tube headers with a y pipe to a single cat back to Borla exhaust system. Will this pass emissions or not? Phoenix area.
Old 06-10-2014, 05:41 PM
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In a 1995, with the cat and smog stuff in stalled on a stock cam, I don't see why not. Or you could "move" to Casa Grande.....
Old 06-10-2014, 05:57 PM
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Originally Posted by hrcslam
In a 1995, with the cat and smog stuff in stalled on a stock cam, I don't see why not. Or you could "move" to Casa Grande.....
I am going to be running a 280 XFI cam will that pass?
Old 06-10-2014, 06:03 PM
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No, it will not. Move to Casa Grande. No emissions there.

Unless you find a really really good LT1 tuner that can tuner your car right before you go to the emission test, then tune it back afterwords.
Old 06-11-2014, 11:54 AM
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there is a guy that can do it. PCM For less. look him up. I have a 1996 buick roadmaster wagon lt1 383 w lt4 heads intake and hot cam, 6 speed with no cat,egr,airpump or any other emission parts on it and i pass every time.
Old 06-11-2014, 06:36 PM
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Originally Posted by 19trans79amws6
there is a guy that can do it. PCM For less. look him up. I have a 1996 buick roadmaster wagon lt1 383 w lt4 heads intake and hot cam, 6 speed with no cat,egr,airpump or any other emission parts on it and i pass every time.
It's possible, but much more difficult with the cam he has vs yours.



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