I bought a LRD chrome exhaust system for my 400 about 18 months ago, when I was interested in getting back into racing, but I've decided to just continue trail riding so now I'm selling it and going back to stock for trail use. I originally replaced the main jet with a larger one, but I didn't touch the pilot like LRD suggested and it seems to work fine for me. My question is, now that I'm going back stock, will I notice a terribly rich condition, or do you think I'll be able to pull off the richer jetting since I still run an aftermarket filter and no airbox cover? I don't think there should be a problem, but I figured I'd ask. By the way, if you know anybody interested in the exhaust...it's going pretty cheap...really good deal! Click the link below if you're interested for details.
LRD Chrome Exhaust System For Sale