Ok, So I called Clifford Performance today to ask some questions about their exhaust headers. I asked the guy on the phone, what is the difference between your headers that have 2 pipes for the collector, and others that have 1 collector. He told me that it helps with mid range power, and that if I ran 2 pipes, 2 mufflers (basically a semi-dual exhaust). I proceded to tell him that I just replaced the cat, and muffler, and exhaust pipe. And I did not want to replace the current set-up with another 2 exhaust mufflers and so on. I asked him if there was a way that I could replace my headers and downpipe without going 2 setups. He said I could but I would only get about a 10% gain in power. He said with the dual setup I would get about a 30% gain in power. He also said the exhaust would heatup the muffler to something like 1300 deg. I was like whoa. HE said it should get to about 425 or something like deg. He also told me that the XJ's fuel injection was not good, and that it inherently had a condition that always runs rich. I said I am getting ready to replace the injectors. He told me that it would not correct the problem. He then told me that I should get this redline system that I could program it with a laptop. I am thinking I am not going to spend all this money for all that. Anyhow, what are you thoughts on what I was told? Lets hear it. :explosion
Thanks,
Silent