i have a 1995 yamaha warrior 350 and i needed a cheap muffler. so i just went to a salvage yard and just found one . but will it hurt my atv ?

 

May drop power, may increase it, you could need to alter the jets in the carb. A friend of mine had a Morini V twin motorcycle, came one day with a stainless silencer (muffler) from a car fitted to it, I asked if it had hurt performance, "no it is faster and quieter now than it was on the genuine pipe" was his reply.

 

It could...hard to say unless you have a dino to check hp. When evee any changes are made to air intake or outlet (exhaust) jetting also needs to change or serious engine problwms could occur. Unless you have the knowledge and experience or the money to pay for help, your better off to leave it stock. Once you start changing stuff, you will need to keep doing stuff to keep it going

 

I maintain lots of "old wreck" bikes, and some have any old pipe fitted, with no apparent ill effects. Utility Quad engines are mostly low tune so can take such mods without problems. Not sure about the Warrior as it was a performance bike.

 

But why? All its going to do is make it louder anyway. There's no point.