redheadedredtop wrote:Hey guys, I am looking at what downpipe to get and I came across the hotpipes. I guess they eliminate the cat. I did a search for this, but none of them answered this question. What I wanted to know is, is that safe...i.e. will the motor still run fine, with enough back pressure.Thanks for any input.Josh
I think what you mean is a test-pipe. Test pipes eliminate the cat, whereas hotpipes connect the intercooler to the turbo. Test pipes are fine, the turbo creates enough backpressure for the exhaust. I reccomend the Project Silvia test-pipe.
http://www.projectnissan.com/P...t=591
Legal disclaimer: running with no cat is illegal, as it allows more pollutants to enter the atmosphere, greater destroying the ozone layer.