I recently added a test pipe on my 95 GS; along with a OBX muffler. I never thought about a fullcatback at the time but I really wish I had. Once I reach second gear, the farting noise initiates...and damn do I get the best attention.. . I'm sick of it, and I have no idea what the problem is. Before I consider putting back my catalyst converter, can anybody help me with this problem? thanks.