Originally Posted by ZAHANMA
Someone can correct me if I'm wrong, but the main gist of the losing torque in the lowend with exhaust modifications (unless you go all the way up and start at the headers) is related to the loss of backpressure.
If you start at the headers and make your changes starting there, that is a different story. The extra pipe and close to symmetrical length in aftermarket headers would help...but there just isn't anything on the market. Those would have to be one off headers.
There are only a couple of guys here that have that done, the only one I can think of currently is Colin (trizombie)...but I know there are a couple others.
Zahanma, were any of those guys using real long tube, equal length to
the collector headers? I thought all I had seen were the shorty log style,
and that those did not provide any additional power and also seemed to
suffer the loss of low end torque. Is there anyone who has really done
long tube headers? Wasn't the issue that there was just no way to route
them in due to the steering column and other items being in the way?
Coyote