Low end / off idle miss

[Jussgivner]

Hey guys, I have a 14 800 xm 154 with an instaboost kit on it I'm having an issue with a miss as soon as I touch the throttle it did it before I had the turbo kit on the dealer cleaned my rave valves put new plugs in checked all me reeds and I thought it was good. It did a very similar thing last season only when it was hot and it actually shot little blue flame balls out the exhaust when it missed. I have a video of it but I'm not sure how or if I can post a video
Any input would be great
Thanks

 

[ippielb]

Fuel pressure too low? Sounds like something a lean condition would do. Not having enough fuel to get a proper combustion and pushing it into the pipe and poof.

 

[Jussgivner]

Would a stock etec with just a can run lean ?

 

[blubbles]

First thing I would do is change the fuel filter and new plugs. Start with the easy things and go from there.... Did your sled get new rave valves from the recall?

 

[moto5151]

I'm not super familiar with skidoo, but they must still use some sort of tps. I would check that first.