[Jimmy richey]

i have 05 trx450r it has a ported head open airbox 13;1 cp piston i run vp c-12 fuel with a rmz450 fcr carbi had no problems with it when i was running a motoworks sr4 full system exhaust i changed myexhaust and put afull system dasa now it wont idle right and the idle hangs when riding my jets are a 180 main a 50 pilot which i tired a 48 pilot also my leak jet is plugged off my air fuel screw doesnt seem to change anything unless i close itand then it dies any ideas

 

[Bullvine rider!!]

open air box?

 

[Bullvine rider!!]

Sorry it says open box on your first sentence. try 185 main 45 pilot. I think that’s what Dasa recommends with there full system. But it might be different with RMZ carb. Not sure if it makes a difference.