Quote:
Originally Posted by JJ2218
I came across this exhaust from GM performance which says in the description: "This exhaust includes calibration and is 50-state compliant."
Part number is: 84578419
I have heard of other GM parts that included a tune which also gave a power increase. Is that the case with this one?
I have called the Chevy 1-800 number, as well as several parts departments at dealers. No one seems to be able to say what the "calibration" actually does. Has anyone here had experience with this, or know how to find out?
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I'm almost 100% certain the "calibration" is for the Active Noise Cancellation feature for cars with the Bose stereo system.
No way in hell Chevy is going to upgrade, tune or modify the performance of the engine.
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