After looking around for a while now, for a pipe that i could run loud for best HP and quiet it up for ATV parks i think i'm going with the E2... I have a few questions...

What gains would i be looking at?

THE BIG ?, Would a slip on handel HPDs 558 kit for best gains(i am planning on installing this kit during the winter)?

How much does it cost to have the header jet hot coated?


Thanks,
TrailRider