2012 Assault BD Turbo mid-high end bog

A little background: I had some work done to my sled over the summer by a dealership (no names) and had a few issues with it. When I got it back it idled really high and reverse did not work. I adjusted the TPS and lowered the idle and now reverse works and it idles normal. I also had them install new Vforce reeds while they had it apart, as well as a complete service. They told me they adjusted the tps when they had it apart but not sure about that. This has been a pull and go sled since 2012.

I should also add that i installed an AFR gauge over the summer and fabbed an intake that ties into the stock airbox similar to the newer boondocker RMK pro kits. It had the "thru-hood" snorkel that I did not like in the trees.

Last weekend we got a little snow so I was finally able to take it for a little spin. I putted around to get it up to temp. When it was warm I got on it a few times and the motor completely falls on it's face at WOT. It spins up to about 6500-7000 rpm normally and then dies out. It doesn't do it on a stand, only under a load. Do you guys have any idea what I should be looking for? Could the AFR gauge be robbing too much power from the electrical system? Could the new intake be affecting it? Also I have not put new av-gas in since April. Could that be the culprit? Heading to the mtns next weekend so any help I can get from you guys would be very appreciated!!


Pic of the intake:

The problem was overfuelling for anybody else that may be having similar issues. The new reeds require much less fuel. At least until they break in. I tuned it with the AFR on the snow yesterday and it is running great!