dump/front pipe performance?

[pushead]

Just installed a 3" dump/front pipe and was wondering if anyone know how much performance gain from stock standard dump/front? i can now reallyy feel the pull and the turbo spoof's up really fast. Will this increase my PSI automatically? anyone know roughly how many KW's will i gain?

Cheers dudes.

[GTS-t VSPEC]

Yeah, it makes a big difference to performance. It will increase your stock boost, and the turbo will spool quicker. Power gain will depend on alot of other factors, but 10-15rwhp is possible.

[Squizz]

I experimented with my current exhaust and did the front half first instead of catback and I got a fair amount of shove in the midrange with my front/dump pipe. And on the niose factor I can hear the spool a lot clearer and louder. Can't wait to do the rest...

[2BNVS]

my experience- mid range got alot stronger, spool bit louder yer and mostly noticed a hell faster spool up, hit 12psi so much bloody quicker...

cheers.......

www.freewebs.com/2BNVS_r33

[GTS-t VSPEC]

I noticed that removing the cat helps alot with spool-up aswell. I put it back in for the road;)

[rob77]

I've posted a dyno sheet on here which shows how much faster my stock turbo spooled up after fitting a dump+front pipe. Full boost by 2600rpm, still using a crappy 2.5" cat. The car will feel much quicker to drive and generally more fun, however the peak gain for me was only 10HP though much better midrange.

[pushead]

thanks for the feedback ppl. the car now seem to pull harder and faster.. much more fun.

@rob77: can you direct me to your dyno sheet? just want to check out the curves.

[pushead]

Originally posted by GTS-t VSPEC

I noticed that removing the cat helps alot with spool-up aswell. I put it back in for the road;)

you dont wanna drive without your cat on the road these days coppas are everywhere

[rob77]

Ummm, I cant remember the thread I made up, I think the file is called dyno245.jpg do a search on that. If not I have the file at home, pm me your email and I can send it to you. The other thing I have noticed that my boost has krept up from 0.8bar to almost 0.9bar after fitting the trust fmic and the dump+front pipe.

[GTS-t VSPEC]

They have to catch me first:D

[2BNVS]

yer i noticed my boost went up a fraction too

cheers...

www.freewebs.com/2BNVS_r33

[pushead]

yep, found it. nice results . but damn about the drop off point .

http://www.skylinesaustralia.com/forums/at...=&postid=325404

[GTS-t VSPEC]

We think that was due to the stock wastegate opening when the NVCS kicks in:(

[rob77]

We'll know for sure today or tomorrow, new turbo's on just getting the finishing touches done. external wastegate td06-20g

[pushead]

niceee, are you going to do another dyno run? show us the new results dude

[rob77]

hell yeah

[GTS-t VSPEC]

Yeah, he'll be doing a dyno run tonight/ tommorow morning. Results will be posted, and then engine management added:D

[pushead]

what kind of turbo are you changing to?

[GTS-t VSPEC]

As above. Trust TD-06 20g, with external wastegate.

[Guest Robo's]

Actually i didnt notice much difference, maybe a little bit mid range. Getting it boosted on Saturday.

Still though, i have a miss from 5500 - 6500rpm, so its hard to tell.