Quote:
Originally Posted by Marty
Tons of information guys, thanks. Installed a Borla cat back exhaust, and have not noticed any power gains (except when I let the sound convince me I'm in a V8). It does idle at lower rpm's in addition to cruising at lower rpm's. I've yet to compare freeway mileage to the stock exhaust, which while driving 55-60 an costing in parts, garnered 31 mpgs. I'm interested to see what this baby can do. Thanks for the tips HighDesert, on the air box, that seems like an easy mod, even though some people say warm air-intake and others CAI. Most driving is 2000 rpms and below. Thanks again.
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Not unless you changed your transmission, tires, or something in that line while changing your exhaust. Cruise RPM is dependent on gearing and vehicle speed, not exhaust work.
Idle RPM can change with exhaust/intake work, as the PCM won't compensate for small differences.
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