Berk Technology Cat-Back Coming Soon!

Bster · 05-05-2009, 03:06 AM

Zach1340 · 06-22-2009, 12:36 AM

Ok so this is probably a realy stupid question but is the dual exhaust advertised on Stillen's website considored a dual catback exhaust?
And I was also wondering, would the nissan dealership place that exhaust on without voiding the warranty? I know they wouldnt do the stillen Cat Conv w/ out voiding it because they arent street legal in any states rite?
Thank you so much for your help haha I feel kinda noobish

LiquidZ · 06-22-2009, 06:52 AM

Quote:

Originally Posted by Zach1340

Ok so this is probably a realy stupid question but is the dual exhaust advertised on Stillen's website considored a dual catback exhaust?
And I was also wondering, would the nissan dealership place that exhaust on without voiding the warranty? I know they wouldnt do the stillen Cat Conv w/ out voiding it because they arent street legal in any states rite?
Thank you so much for your help haha I feel kinda noobish

Stillen's exhaust is not a dual exhaust. The reason being is that the y-pipe forces the exhaust to flow into one pipe for a brief moment in time. A siamese x-pipe or h-pipe allows the exhaust to flow in their own pipe for the full length of the exhaust. The x and h connections typically result in better exhaust scavenging which equals more power.

Now, a true dual exhaust is an exhaust with two completely independent pipes without any sort of cross connection.

I honestly couldn't tell you if a Nissan dealership would void your warranty if they installed an exhaust. They need to prove that the aftermarket part caused an issue to void your warranty (Moss Warranty Act) which is highly unlikely of any cat-back exhaust.

Zach1340 · 06-22-2009, 10:40 PM

thank you, so would the stillen exhaust not be the best way to go then?

miguez · 06-23-2009, 06:01 AM

Quote:

Originally Posted by Zach1340

thank you, so would the stillen exhaust not be the best way to go then?

I wouldn't say that. The Stillen exhaust is one of the best as far as power gain is concerned. It also has a very nice sound, and competitive weight.

It might be wise to wait for the Berk exhaust to see what they come up with, and even Borla's might be worth the wait.

ZforMe · 06-22-2009, 10:41 PM

DDMotorsports will this be the week?

CBRich · 05-05-2009, 08:46 PM

Definitely subscribed. In for the dyno results.

bboypuertoroc · 05-06-2009, 03:12 AM

w3rd. In for results/sound clips/pics.

kdo2milger · 05-06-2009, 03:24 AM

im in, i already know just from the peeps here and all the dynos that i will be gettin the hfcs.

so the catback should be as good or better on gains...

M.Bonanni · 05-06-2009, 01:15 PM

Update:

Here is a photo on the progress with the front part of the exhaust that bolts to the cats. They are still not sure if they are going true dual, h-pipe, or x-pipe, but they should know that very soon. They are also hoping to have a full functional prototype done by Friday.

SoCal 370Z · 05-06-2009, 01:17 PM

Quote:

Originally Posted by DDMotorsports

Update:

Here is a photo on the progress with the front part of the exhaust that bolts to the cats. They are still not sure if they are going true dual, h-pipe, or x-pipe, but they should know that very soon. They are also hoping to have a full functional prototype done by Friday.

Are any flex couplings going to be in the tubing?

M.Bonanni · 05-06-2009, 01:18 PM

Quote:

Originally Posted by SoCal 370Z

Are any flex couplings going to be in the tubing?

They haven't said anything about it, but I can ask.

BerkTech · 05-06-2009, 01:33 PM

Quote:

Originally Posted by SoCal 370Z

Are any flex couplings going to be in the tubing?

Absolutely! The exhaust must have the flex sections installed in order to compensate for engine movement and twist.

If you look closely at the picture I already have the position marked on the jig where the flex will go.

A side note: During the R&D process you mock up the exhaust systems as rigid piece, then add the flex last. If you have the flex in there now the pipes will kind of flop around in there.

LiquidZ · 05-06-2009, 01:52 PM

Quote:

Originally Posted by BerkTech

Absolutely! The exhaust must have the flex sections installed in order to compensate for engine movement and twist.

If you look closely at the picture I already have the position marked on the jig where the flex will go.

A side note: During the R&D process you mock up the exhaust systems as rigid piece, then add the flex last. If you have the flex in there now the pipes will kind of flop around in there.

What kind of steel are you using?

SoCal 370Z · 05-06-2009, 02:03 PM

Quote:

Originally Posted by BerkTech

Absolutely! The exhaust must have the flex sections installed in order to compensate for engine movement and twist.

If you look closely at the picture I already have the position marked on the jig where the flex will go.

A side note: During the R&D process you mock up the exhaust systems as rigid piece, then add the flex last. If you have the flex in there now the pipes will kind of flop around in there.

FINALLY, someone here in the States who gets it!

05-05-2009, 03:06 AM	#1 (permalink)
Bster Base Member Join Date: Feb 2009 Location: Singapore Posts: 174 Drives: '09 PW Z34 Manual Rep Power: 17	__________________ TEIN Monoflex with EDFC \| H&R 20mm Spacer \| SPC Rear Camber \| HKS Hi-Power \| Berks High Flow Cat \| Stillen G3 \| EVO R Rear Diffuser \| Blacked out headlights \| Z1 34Row Cooler \| Z1 SS Brake lines

06-22-2009, 10:41 PM	#6 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 17	DDMotorsports will this be the week? __________________ 13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

05-06-2009, 03:12 AM	#8 (permalink)
bboypuertoroc Enthusiast Member Join Date: Dec 2008 Location: Get out my way pimpin, HI Posts: 419 Drives: '06 Evo IX GSR Rep Power: 389	w3rd. In for results/sound clips/pics. __________________ Evo IX GSR - FPBlack, 30psi... 10's on pump? Let's find out...

05-06-2009, 01:15 PM	#10 (permalink)
M.Bonanni The370Z.com Sponsor Join Date: Nov 2008 Location: Las Vegas Posts: 2,575 Drives: Fast Rep Power: 1321	Update: Here is a photo on the progress with the front part of the exhaust that bolts to the cats. They are still not sure if they are going true dual, h-pipe, or x-pipe, but they should know that very soon. They are also hoping to have a full functional prototype done by Friday. __________________ MikeBonanni.com Twitter: http://www.twitter.com/MikeBonanni Facebook: http://www.facebook.com/MBonanni36 Function > Form

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DIY: Berk Technology HFC Install	M.Bonanni	DIY Section (Do-It-Yourself)	203	08-03-2018 05:12 AM
Berk Technology HFCs gain +19whp + 18wtq!	M.Bonanni	Intake/Exhaust	73	08-13-2010 09:52 PM
Stillen Gen3 Intake, Berk Hi-flow cat, and Stillen cat-back exhaust	axio	Intake/Exhaust	82	07-31-2009 12:41 PM
Coming back to the Z	BurntGauge	New Forum Member	9	03-11-2009 08:25 PM

06-22-2009, 12:36 AM	#2 (permalink)
Zach1340 Base Member Join Date: Mar 2009 Location: Arizona Posts: 2 Drives: 09 Nissan 370z R 6Sp Rep Power: 0	Ok so this is probably a realy stupid question but is the dual exhaust advertised on Stillen's website considored a dual catback exhaust? And I was also wondering, would the nissan dealership place that exhaust on without voiding the warranty? I know they wouldnt do the stillen Cat Conv w/ out voiding it because they arent street legal in any states rite? Thank you so much for your help haha I feel kinda noobish

06-22-2009, 10:40 PM	#4 (permalink)
Zach1340 Base Member Join Date: Mar 2009 Location: Arizona Posts: 2 Drives: 09 Nissan 370z R 6Sp Rep Power: 0	thank you, so would the stillen exhaust not be the best way to go then?

05-05-2009, 08:46 PM	#7 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	Definitely subscribed. In for the dyno results.

05-06-2009, 03:24 AM	#9 (permalink)
kdo2milger OG Priesthood Join Date: Feb 2009 Location: Fargo, ND Posts: 17,859 Drives: NISMO T Rep Power: 60	im in, i already know just from the peeps here and all the dynos that i will be gettin the hfcs. so the catback should be as good or better on gains...