Berk Technology Cat-Back Coming Soon!

semtex · 05-12-2009, 08:21 AM

I found this over in the GTM group buy thread. Is this the source of the +37hp?

Quote:

Originally Posted by RCZ

It's not making more power than the Stillen.. Semtex car made 291WHP from a 254WHP base (from another 370Z on the same dyno). That is 37WHP while still remaining legal in 49 States with the HFC's.

If so, I need to make a few things as clear as possible. I've already stated these things in my own thread(s) on my results. In fact, I've even embedded these clarifications right in the first dyno video I made. And it also appears that these clarifications were discussed right in the GTM thread. But here they are again:

I never did a baseline dyno when my car was bone stock, so it's impossible to say definitively that I gained xyz whp over stock with whatever mods.
The 254whp figure comes from another 6MT 370Z /Sport, dyno'd right before my car, on the same dyno. But it is not the same car, so at best, this figure can only serve as a rough approximation baseline.
I installed the Stillen CBE and Berk HFCs at the same time, so I do not have separate numbers for these two components.
If you use the 254whp number as an approximate baseline, then my 291whp figure appears to support the dyno results that Stillen claims for their CBE (+18), as well as the results that DDM got for the Berk HFCs (+19).

When you look at the totality of circumstances, I think the +37whp 'gain' my car supposedly made must be taken with a HUGE grain of salt. We certainly cannot claim that the Stillen CBE alone made +37whp. There's just no way.

I hope this clears up any confusion.

SOLISIMO · 05-12-2009, 08:31 AM

Quote:

Originally Posted by semtex

I found this over in the GTM group buy thread. Is this the source of the +37hp?

If so, I need to make a few things as clear as possible. I've already stated these things in my own thread(s) on my results. In fact, I've even embedded these clarifications right in the first dyno video I made. And it also appears that these clarifications were discussed right in the GTM thread. But here they are again:

I never did a baseline dyno when my car was bone stock, so it's impossible to say definitively that I gained xyz whp over stock with whatever mods.
The 254whp figure comes from another 6MT 370Z /Sport, dyno'd right before my car, on the same dyno. But it is not the same car, so at best, this figure can only serve as a rough approximation baseline.
I installed the Stillen CBE and Berk HFCs at the same time, so I do not have separate numbers for these two components.
If you use the 254whp number as an approximate baseline, then my 291whp figure appears to support the dyno results that Stillen claims for their CBE (+18), as well as the results that DDM got for the Berk HFCs (+19).

When you look at the totality of circumstances, I think the +37whp 'gain' my car supposedly made must be taken with a HUGE grain of salt. We certainly cannot claim that the Stillen CBE alone made +37whp. There's just no way.

I hope this clears up any confusion.

And anyone that believed it needs some serious help

miguez · 05-12-2009, 08:29 AM

Thanks for the clarifications semtex. And there is also the possibility your car had more than 254whp, and therefore the gains could be even a little bit smaller.

semtex · 05-12-2009, 08:44 AM

Quote:

Originally Posted by miguez

Thanks for the clarifications semtex. And there is also the possibility your car had more than 254whp, and therefore the gains could be even a little bit smaller.

Oh definitely. In fact, my assumption is that my car made more than 254whp when it was bone stock. Because think about it, if I really gained a combined +37 from the CBE and HFCs, then that means that ricer math actually worked (18+19=37). But it's called 'ricer math' for a reason -- gains seldom work that way. As one adds more mods, one should expect diminishing returns.

On the other hand . . . after I added the Stillen G3 intake and went back to that same dyno, I pulled 306.4whp, which is a gain of 15whp. Stillen claims 17.5whp for these intakes. Now, Stillen uses a DynoJet, whereas my gain of 15whp was measured on a DynoDynamics, which usually measures a little lower than DynoJet. Point being, it would appear that ricer math did in fact work when I put the G3 intakes on. So I don't know what the deal is with my car. But I'm not complaining.

M.Bonanni · 05-12-2009, 08:54 AM

Quote:

Originally Posted by semtex

Point being, it would appear that ricer math did in fact work when I put the G3 intakes on. So I don't know what the deal is with my car. But I'm not complaining.

Aparently you're a ricer then...

semtex · 05-12-2009, 09:02 AM

^ LOL. Yeah, thanks dude. I've been trying to figure out a rice way of mounting that GTSpec subframe brace that I ordered from you last week. Any suggestions? I was thinking maybe I could steal some wheels off of a shopping cart and mount them to one end, then mount the other end to my rear bumper so that it looks like some sort of wheelie bar.

M.Bonanni · 05-12-2009, 09:12 AM

Quote:

Originally Posted by semtex

^ LOL. Yeah, thanks dude. I've been trying to figure out a rice way of mounting that GTSpec subframe brace that I ordered from you last week. Any suggestions? I was thinking maybe I could steal some wheels off of a shopping cart and mount them to one end, then mount the other end to my rear bumper so that it looks like some sort of wheelie bar.

I can't even think of a reply to that one.

B1nks · 05-17-2009, 11:38 AM

come oooooon Berk ! I was going to get the GTM exhaust once the price came down but now I'm waiting for this because I have high hopes of getting the exhaust + HFC from Berk. Need another update and an estimated finish date though..that would be nice.

Nikon FM · 05-17-2009, 12:00 PM

Looking forward to this exhaust. My thoughts are BERK HFCs and exhaust. Sure would like to hear the combo before purchase though (video hint). Also looking forward to the gains from both. Thanks BERK tech. for doing such an outstanding job so far!

miguez · 05-12-2009, 11:44 AM

It's worth a Photoshop job!

ssqpolo · 05-12-2009, 06:00 PM

wheelie bar FTW. as 370 owners, we all need this. its a PITA just to keep my fronts on the floor

DannyGT · 05-12-2009, 08:39 PM

Please DD, PICTURES....MOAR PICTURES!!!

M.Bonanni · 05-12-2009, 08:40 PM

Quote:

Originally Posted by DannyGT

Please DD, PICTURES....MOAR PICTURES!!!

lol, I dont have any more. I am a 4.5 hour drive away from Berk Technology

.

BerkTech · 05-13-2009, 12:44 AM

More pics!

The DoubleDown Motorsports 370Z having relations with the Berk 135i.

The midpipe.....

The rear muffler section, the exhaust is a dual exhaust. The 370Z has some unique packing requirements that requires us to package the mufflers this way. There simply isn't enough room to do a / \ config. They need to be stacked in a = configuration.

Y-pipe prototype #1. True dual setup without the H or siamesed X pipe. Those braces are just support braces to hold the y-pipe's pipe spacing. They will not be on the production exhaust. We figured out why some aftermarket exhausts hit that chassis brace. Took some brain storming but we finally figured out what Nissan had designed into the OEM exhaust to keep the exhaust up high in that area.

And the best picture of all..... Broke the head off the tig torch which cut work short today. Gotta pick one up tomorrow morning.....

M.Bonanni · 05-13-2009, 10:42 AM

Quote:

Originally Posted by BerkTech

The DoubleDown Motorsports 370Z having relations with the Berk 135i.

Glad mine is in the dominating position

Thanks for posting pics!

05-12-2009, 09:02 AM	#6 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 33	^ LOL. Yeah, thanks dude. I've been trying to figure out a rice way of mounting that GTSpec subframe brace that I ordered from you last week. Any suggestions? I was thinking maybe I could steal some wheels off of a shopping cart and mount them to one end, then mount the other end to my rear bumper so that it looks like some sort of wheelie bar. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

05-17-2009, 12:00 PM	#9 (permalink)
Nikon FM Track Member Join Date: Jan 2009 Location: Snoqualmie WA Posts: 973 Drives: 03 996TT Porsche Rep Power: 607	Looking forward to this exhaust. My thoughts are BERK HFCs and exhaust. Sure would like to hear the combo before purchase though (video hint). Also looking forward to the gains from both. Thanks BERK tech. for doing such an outstanding job so far! __________________ Buddy Revell: "One man's sooner is another man's later"

05-12-2009, 08:39 PM	#12 (permalink)
DannyGT Track Member Join Date: Jan 2009 Location: Jersey Posts: 919 Drives: 370Z (SOLD) Rep Power: 280	Please DD, PICTURES....MOAR PICTURES!!! __________________ Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold)

05-13-2009, 12:44 AM	#14 (permalink)
BerkTech The370Z.com Sponsor Join Date: Jan 2009 Location: Irvine CA Posts: 279 Drives: Lots.... Rep Power: 273	More pics! The DoubleDown Motorsports 370Z having relations with the Berk 135i. The midpipe..... The rear muffler section, the exhaust is a dual exhaust. The 370Z has some unique packing requirements that requires us to package the mufflers this way. There simply isn't enough room to do a / \ config. They need to be stacked in a = configuration. Y-pipe prototype #1. True dual setup without the H or siamesed X pipe. Those braces are just support braces to hold the y-pipe's pipe spacing. They will not be on the production exhaust. We figured out why some aftermarket exhausts hit that chassis brace. Took some brain storming but we finally figured out what Nissan had designed into the OEM exhaust to keep the exhaust up high in that area. And the best picture of all..... Broke the head off the tig torch which cut work short today. Gotta pick one up tomorrow morning..... __________________ While the others type fast... Berk Technology goes fast.... See you at the track! OUR NEW PHONE NUMBER: (714) 546-BERK READ THE BERK BLOG HERE

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05-12-2009, 08:29 AM	#3 (permalink)
miguez Enthusiast Member Join Date: Apr 2009 Location: Columbus, Ohio Posts: 359 Drives: '04 Cavalier Rep Power: 182	Thanks for the clarifications semtex. And there is also the possibility your car had more than 254whp, and therefore the gains could be even a little bit smaller.

05-17-2009, 11:38 AM	#8 (permalink)
B1nks Track Member Join Date: Apr 2009 Location: Houston,Tx Posts: 721 Drives: 2009 370Z Base 6MT Rep Power: 508	come oooooon Berk ! I was going to get the GTM exhaust once the price came down but now I'm waiting for this because I have high hopes of getting the exhaust + HFC from Berk. Need another update and an estimated finish date though..that would be nice.

05-12-2009, 11:44 AM	#10 (permalink)
miguez Enthusiast Member Join Date: Apr 2009 Location: Columbus, Ohio Posts: 359 Drives: '04 Cavalier Rep Power: 182	It's worth a Photoshop job!

05-12-2009, 06:00 PM	#11 (permalink)
ssqpolo Track Member Join Date: Jan 2009 Location: Florida Posts: 882 Drives: '12 Black Nismo Rep Power: 268	wheelie bar FTW. as 370 owners, we all need this. its a PITA just to keep my fronts on the floor