yo honda karma, well first if anyone has read or know what i was rigging up with that fan system, it worked. Thats not important right now but my question is. My exhaust is a 2.5in straight pipe with a magna flow muffler and dc sports tip. The sound is, ill say unique compared to other straight pipes I've herd on Accords or k24s, its not weedwacker loud or BASSS. But i saw online an exhaust by J2, its more of a "designed" system. SO with my mods that i have which will yield most power my? my custom cat back or the J2. Please leave your feed back and what i should do.