I have a Honda rancher 400 and I was wondering if anyone would care to discuss with me if I should upgrade my exhaust. It's currently stock and I am wondering if I should get an hmf or something like that. I am wanting a little bit more power and someone that I know personally told me that it would stress the motor too much but I am not too sure he is right. Please respond if you have an opinion.
Usually if you change an exhaust 9/10 you need to rejet it . As you have changed the back pressure . And the bike will now be running rich
You will get a little power increase however with the noise the bike is putting out you will be more inclined to push on the go lever . So it feels faster
So if you don't rejet it it will be sore on the motor and also with you blasting it everywhere high RPM'S and all they will also be sore on the motor
So with a rejet and a deristrictive (if I can spell it) exhaust there will be more fuel going into the bike and more fumes going out
Is it a good idea ?, I have no idea. I had a suzuki for 5 years with an almost straight through exhaust. I did not rejet is and it ran rich. Still runs like a champ now
I heard through the grape vine that a sports exhaust can effect your valves / seals . Is there any truth in it?... Again I have no idea . It did not effect my suzuki
Personally if it's going good, leave it . If you want noise and a good looking shiny can on the back, splash the cash
If I was you I'd look into the exhausts with the removable bung. So = loud when you want / quiet when you want it
Then it covers all them times when it's to loud or not loud enough : )
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