Originally posted by 740 turbo brick
Sounds like theres an enormous hole in the exhaust somewhere for one. And yeah, to make a stock car lope like it has Crower 2s, you have to be lean as hell. Leaner than 17:1, from what Ive seen.

Yeah the exhaust is open. When I put the new catback in, I had to get a new cat so I got a megan racing cat(res), and the stock one was impossible to get off so I had to cut it at the bolts. Ill be getting new headers soon so it will all be hooked up right. I tried to drill holes in the old exhaust but it just wouldn't work, so like I said im going to get a set of ebay headers so it will all bolt up right, at the moment I just have it held together so it somewhat flows through the catback.