Hey all. I just picked up an 02' DRZ400e. It has the Yoshimura RS-3 offroad pipe on it. CRAZY loud. I threw the stock exhaust back on and although there has been a power loss I am much happier with the noise level. I did not get much history with the bike other than "it was jetted for the pipe by a different owner" I can see the airbox has already had the 3x3 mod done and the bike was running great with the Yoshi pipe so I am 'assuming' some type of jetting has been done to the carb. I like the idea of an aftermarket pipe for a few reasons, more power, lighter, and I do like a bit of a rumble just not as loud as the Yoshi. So I'm guessing I'll replace/trade for something different. I'm reluctant to start pulling out the jetting if I'm going to be getting a different pipe at some point, my question is, will I do any damage to the engine by putting the stock pipe back on but leaving any jetting in the carb until I get another pipe?