Hey guys, I tried a couple of searches to see if I could find the answer to this Q as I'm sure its been asked before, had no luck so here goes. How much HP can I expect from the 3 popular mods on this site? Head gasket mod? silencer mod? reed valve spacer or notch? Everyone says do it but I was just wondering how much HP.
Thanks in advance
Thanks in advance
I believe it is about 10-15, I think.
yamyrider
Active member
you are looking at about 6hp. But better gas mileage and throttle responce.