Berk Technology N55 Street Performance Exhaust Dyno Numbers!!! - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

BerkTechnology · 09-21-2010, 04:51 PM

The first independent dyno results we've seen for our Street Performance N55 exhaust systems are in! They come from PTuning out in Virginia and they show impressive gains across the entire RPM range!

Here is the baseline dyno, done on a 2011 BMW 135i 6MT:

And here is the dyno done after installation of our full Street Performance exhaust system (mid-pipes + axle-back):

The results are +15.5whp and +20.7wtq across nearly the entire powerband!

Our slogan is "Track Tested, Dyno Proven" and we try to stay true to that by putting out products that perform taking into consideration everything from power to weight reduction. Our Street Performance exhaust system sheds 20 lbs. of weight over the stock exhaust system with improved looks, improved performance, and OEM quality fit & finish.

You can get your hands on our exhaust system at your favorite Berk Technology dealer!

CMSS2000 · 09-21-2010, 05:00 PM

NICE!

My E90 · 09-21-2010, 05:11 PM

.... very! I'm very close to getting new exhaust. It's either Berk or Maddad. Hmmm.....

rkdiddy · 09-21-2010, 05:12 PM

I would love to hear how this exhaust sounds on the N55.

BerkTechnology · 09-21-2010, 05:16 PM

Quote:

Originally Posted by rkdiddy

I would love to hear how this exhaust sounds on the N55.

We couldn't really tell a difference in sound between the N54 and N55 with the same exhaust system. Here is a video of the EAS 135i N54 with this exhaust on it.

burger16b · 09-21-2010, 05:48 PM

damn now I don't know if I want this exhaust.

MarkR171 · 09-21-2010, 06:14 PM

How can you not know?

This exhaust is on my shopping list.

Question: what's the difference between the Berk midpipes and stock?

BerkTechnology · 09-21-2010, 06:37 PM

Quote:

Originally Posted by MarkR171

Question: what's the difference between the Berk midpipes and stock?

The Berk Technology midpipes use larger diameter piping than stock, plus it removes the OEM rear resonator box and secondary catalytic converters and replaces them with straight through resonators. And they're shiny...

MarkR171 · 09-21-2010, 07:18 PM

Sorry, I meant the N55 stock midpipes which don't have cats. Are yours larger diameter than the N55 pipes as well?

igom3 · 09-21-2010, 07:55 PM

Quote:

Originally Posted by burger16b

damn now I don't know if I want this exhaust.

I had full Berk system with Macht Schnell downpipes. It was incredible. Top notch fit & finish. You won't be disappointed.

CMSS2000 · 09-21-2010, 08:46 PM

Quote:

Originally Posted by igom3

I had full Berk system with Macht Schnell downpipes. It was incredible. Top notch fit & finish. You won't be disappointed.

"Had"....why did you get rid of it?

SiN55 · 09-22-2010, 06:32 AM

O.k., so OEM cat stays on? (N55)

marcus · 09-22-2010, 06:57 AM

Have you tried it on a convertible yet? Will it hit the extra bracket in the back?
Thx

CMSS2000 · 09-22-2010, 07:20 AM

Quote:

Originally Posted by SiN55

O.k., so OEM cat stays on? (N55)

Yes. Have to replace downpipe to get rid of the Cat. This system only replaces mid-pipes and back.

jsublime · 09-22-2010, 08:22 AM

Doesn't sound much different than the stock N55 almost seems quiter at low rpm, gains are nice though!

BSM 335I · 09-22-2010, 10:13 AM

The base N55 only dyno's 258whp? Why is that?

david @ eas · 09-22-2010, 11:06 AM

Awesome gains guys! Can't wait to get some N55's in here to install it so we can hear it in person

stevend218 · 09-22-2010, 11:15 AM

I am the owner of the N55 that was Dyno'd.

Quote:

Originally Posted by BSM 335I

The base N55 only dyno's 258whp? Why is that?

To answer this, Ptunning uses what they call the "hear breaker dyno" it is possibly one of the lowest measuring dynos out there. its all in the dyno used.

Quote:

Originally Posted by jsublime

Doesn't sound much different than the stock N55 almost seems quiter at low rpm, gains are nice though!

Absolutely not true! this thing sounds incredibly mean, and is noticeably louder. However, It added quite a bit of vibration to the ride at low RPM's but the sound and power is well worth it. I’ll try to upload some sound clips once I have the time

igom3 · 09-22-2010, 11:53 AM

Quote:

Originally Posted by CMSS2000

"Had"....why did you get rid of it?

Car is for sale. Went back to stock

jsublime · 09-22-2010, 02:32 PM

Quote:

Originally Posted by stevend218

I’ll try to upload some sound clips once I have the time

Look forward to it.

IMASINNER · 09-22-2010, 02:37 PM

BERK

pm'd

BerkTechnology · 09-22-2010, 07:36 PM

Quote:

Originally Posted by MarkR171

Sorry, I meant the N55 stock midpipes which don't have cats. Are yours larger diameter than the N55 pipes as well?

Larger diameter tubing, smooth mandrel bends, straighter flow path, fabricated merge collector, lighter weight, better than OEM materials, and don't forget shiny.

09-21-2010, 04:51 PM	#1
BerkTechnology Lieutenant Colonel Drives: Fast Join Date: May 2008 Location: Irvine, CA Posts: 1,566 iTrader: (1)	Berk Technology N55 Street Performance Exhaust Dyno Numbers!!! The first independent dyno results we've seen for our Street Performance N55 exhaust systems are in! They come from PTuning out in Virginia and they show impressive gains across the entire RPM range! Here is the baseline dyno, done on a 2011 BMW 135i 6MT: And here is the dyno done after installation of our full Street Performance exhaust system (mid-pipes + axle-back): The results are +15.5whp and +20.7wtq across nearly the entire powerband! Our slogan is "Track Tested, Dyno Proven" and we try to stay true to that by putting out products that perform taking into consideration everything from power to weight reduction. Our Street Performance exhaust system sheds 20 lbs. of weight over the stock exhaust system with improved looks, improved performance, and OEM quality fit & finish. You can get your hands on our exhaust system at your favorite Berk Technology dealer!
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09-21-2010, 05:11 PM	#3
My E90 Captain Drives: '11 135i Join Date: May 2007 Location: South Floorida Posts: 743 iTrader: (2)	.... very! I'm very close to getting new exhaust. It's either Berk or Maddad. Hmmm..... __________________ Ordered for ED & PDC - '13 M3 E92 6MT '11 \| 135i \| 6MT \| M Sport \| Premium \| HK \| Nav \| ED & PCD

09-21-2010, 05:12 PM	#4
rkdiddy Private Drives: g35 Join Date: Jul 2010 Location: OC Baby! Posts: 80 iTrader: (0)	I would love to hear how this exhaust sounds on the N55. __________________ On Order: '11 BMW 135i AW/B - DCT - M-Sport, Prem, Conv, Val, HK & Heated Seats Current Vehicles: '08 G35s \| Previous Vehicles: '07 G35c, '07 FX35, '06 350z, '04 4Runner, '02 IS300, '01 Prelude... Print/Web/Twitter/Facebook Design: www.risencreative.com

09-21-2010, 06:14 PM	#7
MarkR171 Lieutenant Colonel Drives: SLK55 AMG Join Date: Dec 2009 Location: Honolulu, HI Posts: 1,531 iTrader: (0) Garage List 2007 Mercedes Benz ... [0.00]	How can you not know? This exhaust is on my shopping list. Question: what's the difference between the Berk midpipes and stock? __________________ 2007 SLK55 AMG - Black on Gray/Black - AMG 030 Performance Package 2011 135i - Traded ///M-Sport - Dual Clutch - Harman Kardon - Bluetooth - iPod - Shadowline Kidney Grill - 225/255 Star Specs - Hotchkis Front Sway Last edited by MarkR171; 09-21-2010 at 06:21 PM.

09-21-2010, 07:18 PM	#9
MarkR171 Lieutenant Colonel Drives: SLK55 AMG Join Date: Dec 2009 Location: Honolulu, HI Posts: 1,531 iTrader: (0) Garage List 2007 Mercedes Benz ... [0.00]	Sorry, I meant the N55 stock midpipes which don't have cats. Are yours larger diameter than the N55 pipes as well? __________________ 2007 SLK55 AMG - Black on Gray/Black - AMG 030 Performance Package 2011 135i - Traded ///M-Sport - Dual Clutch - Harman Kardon - Bluetooth - iPod - Shadowline Kidney Grill - 225/255 Star Specs - Hotchkis Front Sway

09-21-2010, 05:00 PM	#2
CMSS2000 Private First Class Drives: 2011 135i DCT Join Date: Aug 2010 Location: NE PA Posts: 136 iTrader: (0)	NICE!

09-21-2010, 05:48 PM	#6
burger16b Second Lieutenant Drives: 135i Join Date: Sep 2010 Location: LI, NY, CT Posts: 258 iTrader: (0)	damn now I don't know if I want this exhaust.

09-22-2010, 06:32 AM	#12
SiN55 Second Lieutenant Drives: 135i N55 Join Date: May 2010 Location: Croatia Posts: 262 iTrader: (0)	O.k., so OEM cat stays on? (N55)

09-22-2010, 06:57 AM	#13
marcus First Lieutenant Drives: 2011 135i Vert Join Date: Jul 2008 Location: USA Posts: 378 iTrader: (1)	Have you tried it on a convertible yet? Will it hit the extra bracket in the back? Thx __________________

09-22-2010, 08:22 AM	#15
jsublime Lieutenant Drives: 135i DCT Join Date: Jan 2009 Location: NoVa Posts: 410 iTrader: (0)	Doesn't sound much different than the stock N55 almost seems quiter at low rpm, gains are nice though! __________________

09-22-2010, 10:13 AM	#16
BSM 335I Sir Boost-a-Lot Drives: E82 135i Join Date: Dec 2007 Location: So FLA Posts: 496 iTrader: (0) Garage List 2009 135i [0.00] 2007 335i [0.00]	The base N55 only dyno's 258whp? Why is that? __________________ I install all tunes and intakes in the South Florida area. PM me for details and pricing. *With over 100 satisfied individual installs going strong!*

09-22-2010, 11:06 AM	#17
david @ eas Brigadier General Drives: BMW Join Date: Mar 2008 Location: Anaheim Posts: 4,062 iTrader: (5)	Awesome gains guys! Can't wait to get some N55's in here to install it so we can hear it in person __________________ David ///M \| european auto source (eas) david@europeanautosource.com web: www.europeanautosource.com tel 866.669.0705 x33 \| ca: 714.369.8524 Blog \| YouTube \| facebook \| twitter \| flickr

09-22-2010, 02:37 PM	#21
IMASINNER Private Drives: 2011 Space Grey 135i DCT w/M Join Date: Aug 2008 Location: Calgary, Alberta Posts: 82 iTrader: (0)	BERK pm'd

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