Quote:
Originally Posted by F9zSlavik
And what do you mean about getting the propper headers with a pcv? Can you explain?
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You don't get the gains you think you're going to get by cutting the cat chamber open, removing the cat, and welding it back together. (if that's what you were planning) Not on this bike, or any bike that has a cat relatively close to the front of the bike.
But... if you were going remove the cat chamber completely and add a proper 2 into one collector with good welds and a new mid pipe, that could help.
There's just something about leaving a cat chamber there without a cat in it that slows down exhaust velocity too close to the engine and creates a tuning problem. I've seen enough dyno curves after people have tried to know that it doesn't work well.