I had a Stillen kit installed on my Z with a 7at 3 weeks ago and it ran like crap with the Stillen tune. We ran it on the dyno yesterday as a base and had horrible results. We only got 262 WHP with the Stillen tune and it was incredibly rich. Within an hour and a half the tuner had the car at 406 WHP and 302 TQ. I didn't take the advise here about the Stillen tune and I wish I had.
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