Hey i have a 03 arctic cat 400 4x4 fis and i have a k and n air filter on it now and i was looking around on ebay and theres a dyno kit that will work for my 4 wheeler and i was wondering if anyone has tried these at all and if is a waste of money or somthing pretty damn good for the money. thanks

 

i put a kit on my 500........ with a k&n, big gain!

 

did you have to do alot of tunning with it

 

not at first, but i removed my airbox, snorkeld it, and relocated the breather up top..... took a lil bit of tweaking. but if ur still running stock, shouldnt be any probs

 

ok thanks

 

add a pipe and ur done. i rode this weekend at an atv park, and 2 kat 400's kicked butt in the mud pitts.....with 28 outlaws

 

yea i tried to find one but i dont know where i can get one dose anyone???

 

jet kit? ebay is a good place to start looking for many atv parts. u can get new parts cheap. just like buying a car, let them put up the prices and all u gotta do is comb thru for the best one. for about $300 u can get a kit / pipe-k&n/jets.