Quote:
Originally Posted by Jimabe
No luck yet on finding one local to hear, but talking w/the different Reps sounds like the CORSA axle back is the one for me. Will be louder than with current NPP's closed (that's fine) but should be a bit quieter than with the NPP's open (straight headers).
Being that these don't have the NPP's, will it throw some kind of code?
Thanks
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Under no circumstance is the Corsa going to be quieter than stock NPP, closed, open or any other variation. The Corsa is a better tuned system so it may CRUISE quieter when you're on the highway or keeping it below 3000 RPM which is what Corsa is the best at. But if you put your foot into it, the Corsa will be louder, albeit better sounding in all situations. Sport or Xtreme. The Corsa is a straight 2.75" exhaust with muffler cases to cancel drone and other unwanted sound characteristics. Contrary to popular belief, the valves being open on the NPP doesn't make it "straight piped" or any of the other terms I've heard said about it. The exhaust is still flowing through the same distance and amount of pipes, it's just allowed to take a path of less resistance. See the diagram for the vented pipe that will still leak and bleed exhaust into the rest of the suitcase...
