How much horse power will I gain with a hmf exhaust and dyno jet kit on my kodiak 400 atv?

Question

How much horse power will I gain with a hmf exhaust and dyno jet kit on my kodiak 400 atv?

Answer 1

I believe HMF has a chart on their website. It should be around 3 to 5 hp. You are doing the correct thing with putting a jet kit in with a muffler because if you take away back pressure with the pipe you must add fuel.  

Answer 2

if you think about even a 5-10 hp gain on a quad you will noitice, the pipe will give you the best gain, and same if you put in a k and n filter that doesn't gain power but throttle response is better. the dyno jet kit was for higher elevations but noticed some improvement low down, I have tried the dyno kit didn't like found the pipe and a clutch were the best, but a 5-10 hp gain should be expected

Answer 3

There will be  noticable increase in expectation,but the increase in horsepower ,while being there,will be something you won't notice .

there will be a better throttle response and,in the end more enjoyment!

                                        "BRILLIANT"!!!!

Answer 4

You will gain 4-8 HP. 400's don't have a lot to begin with, so you won't see huge gains. You will definately feel it though.