I am starting to lean towards the Borla true dual exhaust instead of the Fuji. A- because I've heard good things about Borla and B- it's a hell of a lot cheaper.

My question is about the install. Does a true dual install require any modifications or is it a bolt on like the Y pipe style exhausts? And if anyone wants to share some more Borla experiences, that's cool too.

Ivory Coupe 5AT
Z tube, K&N drop in.
Crawford Plenum and Fujitsubo Exhaust soon to come...

 

The borla had great hp numbers on the dyno, BUT! it only did those numbers in a small portion of the power band, like the last 1000rpms and it made next to no torque. While the Fuji won't make the peak numbers as high as the borla, it will make power over a much better rpm range and it will make torque. The only way you'll out do it, would be with the Stillen TD.

True duals do just bolt up to the cats.

Borla = 8.2 Hp - 2.7 ft/lbs torque (peak values)
HP increase from 5500 rpm to 6500 rpm range. Lost HP & torque below 1800 rpm. 60mm pipe.

Nismo = 6.3 Hp - 4.5 ft/lbs torque (peak values)
Developed torque and Hp over wide rpm range. Torque increase starting at 3000 rpm. Most HP increase from 4800 rpm to redline. No power losses below 1800 rpm

Fuji makes the Nismo exhaust, the coupe system differ's from the Z system above in that it use's slightly narrower piping, 70mm vs the Z's 76.3mm.

Just for fun.

Stillen = 8.1 Hp - 7.3 ft/lbs torque (peak values)
Hp and torque increase starting around 3000 rpm to redline. Lost a little Hp & torque below 1800 rpm.

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt<P ID="edit"><FONT class="small"><EM>Edited by Gsedan35 on 08/06/04 09:24 AM.</EM></FONT></P>

 

I'd like to go with the Fujitsubo, but I don't know if I can justify the cost and I hear that the fitment on the Nismo is a little off. I love low end torque though... Can't seem to make up my mind.

Ivory Coupe 5AT
Z tube, K&N drop in.
Crawford Plenum and Fujitsubo Exhaust soon to come...

 

Well I waffled again and went ahead and reordered my Fuji Y pipe. I'll try it for a bit and if I think that I need more I'll order the rest of the Fuji exhaust later on.

Ivory Coupe 5AT
Z tube, K&N drop in.
Crawford Plenum and Fujitsubo Exhaust soon to come...