I am very disappointed with the push turbo kit I purchased from ken hunter, owner of push turbo. he was paid $7500.00 cash four months ago, and I still have not received all the parts for my kit. it is december 31 and I still can't use my snowmobile. the mapping is wrong, and the motor will not rev over 4200 rpm due to the computer not being setup properly, and faulty mapping. ken rarely answers his phone, and will not return my phone calls. I ordered a bolt on kit. it bolts on but dose not work. save your self a huge headache and do not buy products from people who don't stand behind their products. besides with such poor customer service he will probably be out of business soon.