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Discussion Starter · #1 · (Edited)
Currently been not happy with Overkills tune and being ignored so finally got to get the Impala on the Dyno at a local reputable speed shop and see where we actually really stood as far in actual power with bolt ons. I was not disappointed but also not highly surprised as you can see these cars lose alot to the wheels vs their 305/276 crank numbers stock. Check the below graph even with full bolt ons. Best I could get was 266 max. Next step I will do will be to delete the 3rd cat and redo the S pipe.
ALSO, it would help to let people with Overkills tune know my tuner showed I had bad cam timing points as well as too much timing. Also jerky shift points that were not correct in the tcm. As of today car responds better and smoother.
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