I know certain people were hard on MOTO!! But I still had faith, well here is my report after 200 miles of all kinds of difference snow conditions, and all I can say is WOW!!! My sled has never ran so clean and crisp. AFR has been on 12 constant, no burble in the mid range, performance has improved a tad ( not a whole lot ) Gas mileage has improved from my previous set up ( GEM) but harder then stock, wich I don't t care, in the trails this thing was an animal, after 25 miles I didn't even look at the guage, was actually fun to ride this weekend. GREAT job Psyco sled! Thank you for the service.now that this thing is running so good I will turn up the boost to 6.