I recently bought the full LRD exhaust for my YFZ 450 and a k & N air filter kit, I,m running with the lid off. I was wondering if anyone has bought the same setup and could tell me what jetting setup their running. I'm running 175 Main, 48 Pilot, 1 Turn on the air screw, and 6 on the needle positon. The plug is running a little white on top end, but the machine doesn't misfire it runs awsome I really like the pipe. The LRD pipe pulls really hard from bottom to top if your looking for a pipe this is the one to get. I was also wondering if anyone has a dyna ignition on their quad yet and how it helped the performance. Any information would be great. [img]i/expressions/face-icon-small-happy.gif[/img]

 

If its running great, its jetted properly.

 

id say up the jetting is better to run rich rather than lean

 

It will run better with the YZF needle on clip 4. Then try going up on the main until it gets slower!