Hey guys, I finally got a scorpion exhaust on the way from the UK after attempting to buy a leo vince and a GPR system that turned out to be out of stock. I'm thinking I will just leave the cats in and run the exhaust with stock airbox and filter. What do you guys think about the cats? I'm hoping with cats in it won't be quite as loud? I was just curious as to what you guys have done to yours, cats in or out, fuel controllers, ect. I want the bike to be as reliable as possible since our bikes and parts are getting harder to come by.