^ UpREV it and those codes get turned off, you'll pass everytime, even with test pipes. I've had test pipes for 2 years now, never threw a CEL on the Z and had HFC's on my G never threw a CEL either with the UpREV. Plus you optimize the mod's you have and get that nifty vallet mode in the event you are forced to vallet your car. Not a fan of valeting my car but sometimes you have to
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11 SR 370Z Sport 6MT - Sold
03 Escalade AWD - Sold
13 Silverado LTZ Z71 Crew Cab
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