Any tips on how to splice in or do this yourself. Don't want stainless & to pay hundreds to mod.

from http://www.sportcompactcarweb.com/te...scc_ssbbpart2/

"When you look at an extremely restrictive stock exhaust like this Nissan 240SX piece, note the narrow cross section in the crushed bends, the small pipe diameter, and the unnecessary amount of bending. THe A'PEX exhaust next to it has a large pipe diameter, wide-open mandrel bends, and is as straight as possible given the under-car space restrictions. This particular exhause made 15 hp, thanks to the poor design of the stock part."

 

its as easy as going to an exhaust shop and having the bends replaced with smoother ones (most dont have mandrel benders though so you wont do you much, and welding in straight pipes where resonators and stuff are...and ditching the cat...but honestly all you'll gain is like 2hp and alot of unneeded noise. best bet is to buy an off the shelf unit, if youre not looking to spend much look into the brullen (sp?) systems, dual tip, stock like, good for n/a power, or the megan or ss autochrome exhausts...$200-300 and usually good quality.

 

what Dan said... and props for digging up a 6+ year old article!!