hey guys it's me again
I did some adjustments. I turned 3 screws out on the fuel/air mixture and rode it and it helped the back firing issues but it still glows red. I have 150/155 with LID on also snokle too but I have (3) 1 inches hold on the lid. I live around 2000ft. The headpipe is still very purple. My pilots are still stock. How can you guys have your headpipe little bit gold and mine is very dark purple. I tried everything. I did what Yoshi said 1 and half screw out but it did nothing at all. I was riding my Raptor and it was on night and it was glowing red the whole time. it really scares me. it makes me think that I am cooking the engine!! it glows all the way to the oil tank. I called Yoshi and they say I have to use 160/165 if I want to have the lid off but for the lid on i can use 150/155 but it still glows red and some people say that's normal because of thinner head pipe and it's not painted black like stock pipe. Do I need to get bigger pilots 25 to 27.5? Will this help my problem??
Thanks for you help. sorry for this problems [img]i/expressions/face-icon-small-mad.gif[/img]
Thank you and Night,
Dusty

 

yea it wouldn't hurt to go pilot 27.5 to do it.
That only thing I could think of it after you describe the problem.

 

A glowing headpipe is a lean condition. I wound up going to 27.5's to clean up my previous head pipe glowing problem.
Thats all I have to say about that.......

 

I would check and see if you have an air leak of some kind....maybe one of the carb boots is torn or something. If everything is ok then I would try the larger pilots. Might as well try the 27.5's. The stock pilots are 22.5's I believe.

Strange though....I live at about 800 ft. where the air is denser (compared to 2000 ft.) and I have the stock 22.5 pilots with 3 turns out and my pipe definitely doesn't glow. Even at 1.5 turns out my pipe didn't glow and it was cool (about 55 F) when I first installed the pipe. I also have the back 2.5 inches of my lid removed completely and a 1.75 inch hole in the part of the lid that remains...which is a lot more open than yours....although I did leave the snorkel on and just trimmed the restriction.

You would think that all Raptors would not be this different.

Maybe there's a local shop that could set up your raptor for you if all else fails.

Good Luck....Hopefully the larger pilots will work.