LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Header gains

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Old 10-09-2006, 06:12 PM
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Location: Three Oaks MI
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Header gains

Anyone got ET numbers from a swap from stock manifolds to headers? I'm trying to see what gains come from just this swap alone.
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Old 10-09-2006, 06:21 PM
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Re: Header gains

Hey, I went from 13.8 to 13.4. I also got my PCM reprogrammed and I had supporting mods in sig.

Those times are off N20 by the way.
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Old 10-09-2006, 06:40 PM
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Re: Header gains

So, I could expect .4 with a change to headers? I have the 160 thermostat, CAI, and can tweak the PCM.
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