Bout as much as a riding mower.... 18-20.

 

Hey warrior02man,you're taking a real beating on here.Do you know what a stock 400 puts out?Probably picked up about 3 or 4 hp.Not for sure though.Have you noticed much performance difference since you installed the pipe?Jetting is very important.When I had a raptor,I installed a pipe and filter.It did not have a big enough jet,and I got beat by a stock raptor.Later I rejetted it,and I wasn't the one losing that time.My banshee dynoed at 73 hp. 42 ft. lbs.,but I'm sure your's is better for trails than my banshee.

 

your proibally around 24- 26 horsepower

 

dude they come stock with closer to 30 soo i think hes puttin out about 35hp

 

i bought it like this.. and yes its jetted.. look at the mod list! lol... still wondering how much I am putting out.. i guess 35 is the most reasonable.

 

I WOULD SAY AROUND 35 TOO, THE PIPE ADDS 2-3, AIRBOX AND JETTING ANOTHER 2-3 SO AROUND 35