i just put a full yosh system on my raptor with 160/165 main jets and k&n pro flow kit with 2 big *** holes in the lid

 

You are way I mean way to lean you need to change pilot jets get bigger one hurry before you melt you engine.

 

thanx should i go up to a 25

 

My friend had the same thing with his raptor when he put the yoshi pipe on. He called YOSHI And they said the pipe is not as thick as the stock one. He could only see it in his barn, once you got out side you cant see the glow.

He has rode it all summer like this and its fine so far. Air screws are 1.5 turns out.

 

Thats acutally normal. Even with the stock headpipe they glow but not quite so bright and it's harder to see. The stainless steel combined with thiner lighter metal really tend to show the glowing alot more but it wouldn't hurt to bump up the pilot or adjust the air/fuel mixture. It's not as serious as some people make it out to be. Good luck with that.

 

welllll

it wouldnt hurt to go a bit richer on the idle screw (3 turns on both),,,and go to a 25 till you really dial your jetting in

Lean is really bad (really bad),,,,Rich is ok

glowing is normal,,,but tooo much is fatal

go rich and then lean down from there