I ordered me a HMF Slip On, HMF says that it gives it a 2hp increase and bout 5ft more torue! Will I be able to tell much of a diffrence in it compared to the stock pipe? How so? Thank ya'll!

 

Well it will be loud lol....which is good thing...it will just be opened up and be alot faster...as long as you rejet...

 

While i dont know the numbers on one of these pipes but only 2 horse sounds low. real low. I would deff. send it back and go with either a pro circuit or a whitebrothers e-sereis. With one of those pipes i have noticed an improve in the bottom end and mid. Lot more snappy.

 

W/ the HMF u ain't gotta rejet for the warrior!

 

Yes, you'll be able to tell the difference; it will be WAY louder. As far as the increase in power, only if you re-jet. If you don't re-jet you'll be lean which means running hotter. Hotter equals less power and decreased durability, especially on an air cooled motor. As far as a difference in power, there may be some but with the antique design of the Warrior motor it's not going to shock you. Your best bet for more power (short of selling it and picking up a used Raptor) is a big bore kit.

Edit: Anybody that tells you that you don't need to rejet for a pipe (any pipe) is wrong and casts doubt on their HP increase claims. Internal combustion is a stoichiometric equation (Def. : "the law of chemical combination by weight and volume"). What that means in our pipe situation is that the new pipe flows more air (exhaust) therefore more fuel has to be added to achieve the stoichiometric ratio which I believe is around 15:1. That means for every 15 parts air you need 1 part gas. More air=more gas=Rejet
If you don't rejet instead of 15:1 you'll be running 17:1 or 18:1 which is a lean condition, lean meaning too much air.

 

If you dont have to rejet, then how much more power will you really get? will it even better alot better then stock?and no, 2hp is about normal from any pipe for a warrior....You felt alot of power difference, thats from the 2-3hp gain,,,it isn't going to gain 9 or 10 like it would on a raptor.

 

Would it be a waste of money?

 

Would I be able to out run a blaster, Suzki 230, stock warrior, or a 300ex?

 

maby

 

Yes, Yes, Yes, and yes......you could out run all of those stock...cept for maybe the other stock warrior