I removed the silencer from the exhaust installed a jet kit and a K&N filter. My question is if I have the exhaust cut open and the baffles removed will this cause a problem with back pressure or any thing else?

Thanks

 

I have a straight thru pipe with a megaphone on the end,
your only problem is going to be neihbors bitching its too loud, or maybe youll throw a spark and set the forest on fire, but other than that you are good.