ANMVQ

iTrader: (13)

Ok just looking to change to tone some, and add some HP. Was thinking either HFC's or Exhaust depot's Y pipe. The only reason I'm debating is I just saw I dyno that the HFC's only added 10 WHP( G37X) and the Exhaust depot's Y pipe claims the same thing.. I had two REALLY bad experiences with HFC's and not sure if I wanna go down that road again,, HUGE tread of mine in G35Driver and lost the car for like 6 months to the dealer trying to figure out the issue.. Just looking for some options.. Y pipe VS HFC. WHP gain sound, and price. + The HFC's are a PIA install

jhenka

iTrader: (1)

Subscribed for the same information.

chuckie311

iTrader: (3)

from exhaust depot..We got 5WHP from it but we got 10 under the curve!
HFC flow better thought the power band and give you more TQ

thread about berks
https://www.myg37.com/forums/intake-...no-tested.html
read though it it has his dyno graphs in it as well

ANMVQ

iTrader: (13)

good read chuckie thanxm Looks like 15 WHP and 12 WTRQ,But still not a lot more then the Y pipe.. for the PIA install,, But awsome read, thanx

A_Palaroan

iTrader: (2)

im thinking the same.... i already have an exhaust and intakes and i dont want it to be annoyingly loud. good luck with what you do

chuckie311

iTrader: (3)

they are making upwards 23.3 whp and 31.8 lb-ft of torque over stock cats on a 370z
Motordyne's ART pipes

Nissan 350Z Motordyne ART Products - Fact Or Fiction - Import Tuner Magazine

ANMVQ

iTrader: (13)

Nice read again, But he ran test pipes and a CBE so he removed all the restriction in the exhaust.( Car was proably loud as Hell).. I do not plan on changing the whole system just looking for one or the other Y pipe or cats.. So if you take the typical gains on CBE out ( What 10-12 WHP) It still made good numbers at 20 WHP or so. could not find anyting on the Y pipe other the the exhaust depots site.. but for the total diff of -10 WHP I still may stay away from the HFC's.

ANMVQ

iTrader: (13)

Just saw this ,Berks HFC on a stock car, made 7-9WHP and 9-10 WTQ.

http://farm3.static.flickr.com/2195/...edc71841_o.jpg

carz

HFC alone would not be a gainful mod.....it needs to be combined with other things. Ive read in other places that HFC will not get you any more than 5whp

ANMVQ

iTrader: (13)

Mroe and more looks like a Y pipe. For definitly not worth the PIA of install and the noise it will add with the stock Y pipe.. HISSSSS

driftmunkey

HFC's didn't really make any noticeable difference to me on the butt dyno. But when it was tuned there were some gains.

ANMVQ

iTrader: (13)

The 8-10 advertised or more.

Steveo47

iTrader: (8)

i really like my test pipes, they really made the stock exhaust sound better. And i have noticed a buttdyno gain in the mid-high rpm. imo its worth it, the instal is hard IF you dont have the right tools. GET:

PB BLASTER OR KROIL (A MUST!!!)
3 1/2" 10" extentsions
Appropriate sockets (cant remember size)
a 1/2" torque wrench (A MUST). I used a 1/2" 2-3 foot long torque wrench
o2 sensor socket
and stripped bolt extractor (Saved me ***)

Ibanez540r

iTrader: (1)

A little thread jack, but at least on subject - I already have HFCs but have not installed them yet. I'm also a little worried about the rasp and was thinking;

Do you think if I had Exhaust Depot do there y-pipe and add resonators, would it still be a beneficial gain, and would it help with rasp but still sound good?

TomieG

iTrader: (5)

Yes it's worth it. The stock cats are one of the most restrictive components next to exhaust.

Berk HFC was one of the first mods i had done. Still loving them.