Okay so I am about to get my RE pipe in on monday for my 07 450r. I'm at 500 feet elevation. I also have the HRC jet kit and a ton of main and slow jets that i got from jets r us. I did the T way adjustment (uncorking my r) and want to ride with my airbox removed. Well I'm pretty new to quads. Actually I've had mine for a week now only(first one). My question is can someone give me a good starting point for jetting so I can get it close and maybe only have to do minuet adjustments. Thanks for everything. this site rocks and I can't wait for my pipe to come in! please replly if you can help me. because i'm really nervouse about ruining my engine if i run to rich or lean. Thanks again.