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Old 10-08-2003, 09:01 AM   #8
mbiker97
Scooby Guru
 
Member#: 7922
Join Date: Jun 2001
Chapter/Region: MWSOC
Location: Tucson
Vehicle:
04 CTS-V b/b/b
99 GMC Highrider

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Everything that I've heard from different tuner points to welding bung 12-18 inches after the turbo in the downpipe. This is where there is optimal temperature for the O2 sensor. It therefore will give the most accurate readings. You don't want to tune for leaner than 11:1 on pump gas. I run 10.6:1 just to be on the safe side. If your tuning for race fuel you can often tune for 12:1.

Too much fuel can cause knock. I forget the exact reason why but I remember it being discussed.

You absolutely want to calibrate TPS so that your Utec operates correctly. Just read your instructions, it's really easy. If you go slightly over 100% it is okay, but you want to at least hit 100% at WOT.

New question #6: Boost control doesn't work like that for any type of boost controller that I know of.
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