Hello all!
I have a gen III with a borla, M&M headers and I'm either going to go with high flow cat or cat delete. Should I tune the car? Who does tuning in the midwest (IN/IL/KY)? What happens if I don't tune besides leaving power on the table, will it probably run lean or rich on a stock tune? Thanks!
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01-16-2014 #1Enthusiast
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- Dec 2013
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Should I tune my car after exhaust? How?
Last edited by Vipes; 04-21-2014 at 06:37 PM. Reason: typo
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