Does it help much to pull the spark arrester out of the silencer for HP? Do you have to re-jet?

 

I think it prolly would give you a little bit, prolly not enough to notice though. As for jetting i dont think so...

 

I pulled mine and i noticed low end gain and a small amount of top end gain. i also installed a k&n air filter, you don't have to rejet with this settup either.

04 raptor 660

 

did you just take the whole baffle out?i tryied, but its impossible. now its all dinged up like crazy, and its a square insted of a circle...

 

Take the bolt out on the bottom and get a towel or something to clamp pliers or vise grips on and pull and wiggle it'll come out, Yes it does give you gain not to mention it sounds better!! good luck

 

i took the baffle out by taking out the screw and throwing it in the trash. then i sprayed a small small amount of w-d40 on the baffle. i then hooked on to that baby with my vise grip pliers and started turning. slowly the hole thing came out. i then tossed it into the trash. i like the sound and the power gain.

04 raptor 660
lots of poor boy mods

 

I was talking about the screen spark arrestor you get with after market exhausts. I pulled mine and it killed the top end power. I checked the plug and it was a white as my ***. Before it was the proper color. So, I think you need to rejet when pulling the arrestor on aftermarket systems. I think I will go up two sizes on the mains and check it out.