I was looking at the SBP exhaust chamber and I also came across arrows motorized exhaust chambers and was wondering which is better? I want an exhaust that will give me noticable power. I dont know of any other exhaust except a demon chamber and motovello, but personally I dont like the motovello one cuz you have to fabricate it urself which I have and want to send it back. Direct bolt on is what I like. Seems like both SBP and arrow's exhaust chambers is proven to be good exhaust chambers.