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Old 06-25-2012, 05:02 PM   #10
8cd03gro


 
Drives: 2005 STi corn fed
Join Date: Jul 2008
Location: Colorado
Posts: 3,007
Weight reduction doesn't require a tune

But really, especially with forced induction engines, AFR's can be very touchy. You can typically get away with some exhaust stuff, but power is going to come from either making the engine more efficient by freeing up more flow hot or cold, increasing boost, or cooling the intake charge. Any of these are going to require a tune to take full advantage of. If you don't want to void your warranty with a tune, just work on taking advantage of the power you have. Lighter wheels may be a good option.
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