Nissan 370Z Forum - View Single Post

chuckd05 · 10-22-2009, 04:12 AM

Mine are already installed with no before and after dyno.. 150 miles or so later no CEL

I just searched and found nothing but conflicting information. You would have to see 5-10 dynos from people swapping test pipes to hfc's on the same car and same day to justify this. Ecu needs to learn changes so a simple task as a pedal reset and a hard test drive can make a difference.

From my knowledge and experience I will say it's my opinion thAt test pipes are going to make more power. Just my .02 .. If someone has a link to specific threads that go over this help me out because I just found two. One that said tp make more and the other from ddm saying how they gained 20 whp from hfc. Berk test pipe dyno I can not find. The test pipe that tested at 12 whp was a different brand , granted it's the same design / idea but I can not fond enough information to warrant coming to the conclusion that hfc make more power than test pipes on the vq37hr. I know you made 16 with hfc but who's to say the berk test pipes wouldn't do the same or better with your reset and driving. The company who tested the test popes at 12 was a install/dyno right after test according to what they said .

How did you reset your computer ? That alone could of freed up power. Coming from an 03 g35 if I did a pedal reset on the dyno there were times it would pull 4-5 more on the very next run.. So many things can mess with dyno results.

I certiably felt am increase in power with the test pipes tho .

10-22-2009, 04:12 AM	#40 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 20	Mine are already installed with no before and after dyno.. 150 miles or so later no CEL I just searched and found nothing but conflicting information. You would have to see 5-10 dynos from people swapping test pipes to hfc's on the same car and same day to justify this. Ecu needs to learn changes so a simple task as a pedal reset and a hard test drive can make a difference. From my knowledge and experience I will say it's my opinion thAt test pipes are going to make more power. Just my .02 .. If someone has a link to specific threads that go over this help me out because I just found two. One that said tp make more and the other from ddm saying how they gained 20 whp from hfc. Berk test pipe dyno I can not find. The test pipe that tested at 12 whp was a different brand , granted it's the same design / idea but I can not fond enough information to warrant coming to the conclusion that hfc make more power than test pipes on the vq37hr. I know you made 16 with hfc but who's to say the berk test pipes wouldn't do the same or better with your reset and driving. The company who tested the test popes at 12 was a install/dyno right after test according to what they said . How did you reset your computer ? That alone could of freed up power. Coming from an 03 g35 if I did a pedal reset on the dyno there were times it would pull 4-5 more on the very next run.. So many things can mess with dyno results. I certiably felt am increase in power with the test pipes tho . __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-) Last edited by chuckd05; 10-22-2009 at 04:26 AM.