Quote:
Originally Posted by m34jlp
thats when i really noticed (after removing all the cats). i went back to get it retuned and they said it wasnt making power because i still had my stock muffler...it made like 330rwhp...doesnt/didnt seem right to be so low with no cats, aa filter, aa tune...
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Exactly what I was running into...I was 15-20whp down from where I should have been.