Hey all, so i just bought a '90 EF hatch Si with a JDM B16. Let me start off by telling you that the exhaust is completely disconnected right after the headers before the cat. I was driving down the highway in 5th gear and just started losing power. RPM's dropped and the b16 was making a wierd bogging noise. Could this be purely from the exhaust being disconnected?? it starts up fine but runs and idles super rough. any suggestions is greatly appreciated!