BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      05-25-2011, 12:22 AM   #1
HP Autosport
Lieutenant General
United_States
418
Rep
11,446
Posts

 
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

iTrader: (29)

1M First Exhaust mod by HP Autowerks, Inc.

Ever since we picked up the 1M we thought the exhaust was a bit too civilized. It needed a bit more rumble, nothing overly loud, but just a touch more.

We removed the oem mid-pipe(28.3 lbs) with two secondary cats and a resonator and replaced it with a full stainless steel resonated mid-pipe(21.2 lbs). The mid-pipe has dual 2.5" pipes with dual resonators, into a single 3" Y.

Installation time is about 30 minutes using hand tools with a perfect fit.

Here is a quick video with sound(we will post another one later as we were running out of daylight):

Attached Images
  

Last edited by HP Autosport; 05-25-2011 at 12:45 AM.
Appreciate 0
      05-25-2011, 03:22 AM   #2
Trutchy
Private
6
Rep
73
Posts

 
Drives: 1M
Join Date: Mar 2011
Location: Dubai

iTrader: (0)

HP gain? Dyno comparison??
Appreciate 0
      05-25-2011, 03:55 AM   #3
HP Autosport
Lieutenant General
United_States
418
Rep
11,446
Posts

 
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

iTrader: (29)

Quote:
Originally Posted by Trutchy View Post
HP gain? Dyno comparison??
Not looking for HP gain here, but simply for better sound.

10 hp and similar torque numbers shouldn't be out of the question.
Appreciate 0
      05-25-2011, 04:23 AM   #4
993 911
Captain
993 911's Avatar
16
Rep
871
Posts

 
Drives: E93 335i, E82 135i
Join Date: Jan 2007
Location: Portland

iTrader: (0)

Garage List
2008 135i  [0.00]
2007 335i Convertible  [0.00]
Needs a straight pipe
__________________
'08 135i - Alpine/Black, BMW Performance
Appreciate 0
      05-25-2011, 05:53 AM   #5
pwdrtoastman
Second Lieutenant
No_Country
6
Rep
222
Posts

 
Drives: 2007 BMW 335i
Join Date: Dec 2010
Location: Colorado

iTrader: (-1)

Looks simple, very clean.
Appreciate 0
      05-25-2011, 06:12 AM   #6
Trutchy
Private
6
Rep
73
Posts

 
Drives: 1M
Join Date: Mar 2011
Location: Dubai

iTrader: (0)

well keep up the good work and i will be sending you a list once you have more on offer...unfortunatly my 1M only arrives in August!!
Appreciate 0
      05-25-2011, 06:41 AM   #7
Strongbark
Brigadier General
Strongbark's Avatar
No_Country
88
Rep
3,688
Posts

 
Drives: 2015 M4 on order
Join Date: Jan 2008
Location: Earth

iTrader: (1)

Somebody please dyno this car already!
Appreciate 0
      05-25-2011, 09:16 AM   #8
Cisitalia
No fast lane bandits allowed
Cisitalia's Avatar
United_States
3
Rep
337
Posts

 
Drives: 2009 135i TiAg 6mt M-Sport
Join Date: Sep 2009
Location: Charlotte, NC

iTrader: (1)

I agree with the dyno comment. I am even more curious what a stock 1M would dyno at. Will the results show more hp/tq similar to the 135i?

Great you guys are jumping on mods for the new 1M. Keep up the good work.
Appreciate 0
      05-25-2011, 10:41 AM   #9
carchrism5
Major
carchrism5's Avatar
United_States
19
Rep
1,203
Posts

 
Drives: 1M
Join Date: Jun 2007
Location: CT

iTrader: (3)

Send a message via AIM to carchrism5
When should be expecting these parts for sale?
Appreciate 0
      05-25-2011, 10:45 AM   #10
Dan Parker
Major
United_States
39
Rep
1,421
Posts

 
Drives: 2012 Golf R
Join Date: Nov 2010
Location: Georgia

iTrader: (0)

How does it sound in the car while cruising or part throttle? No drone?
When I was under my car the other day I was looking at this section of pipe and thinking similar things as you. Thanks for cutting away.
__________________
Dan Parker
Appreciate 0
      05-25-2011, 11:10 AM   #11
HP Autosport
Lieutenant General
United_States
418
Rep
11,446
Posts

 
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

iTrader: (29)

Quote:
Originally Posted by Cisitalia View Post
I agree with the dyno comment. I am even more curious what a stock 1M would dyno at. Will the results show more hp/tq similar to the 135i?

Great you guys are jumping on mods for the new 1M. Keep up the good work.
The car will be headed to GIAC for a base run and R&D on software flash very soon.

Quote:
Originally Posted by carchrism5 View Post
When should be expecting these parts for sale?
It's available now!

Quote:
Originally Posted by Dan Parker View Post
How does it sound in the car while cruising or part throttle? No drone?
When I was under my car the other day I was looking at this section of pipe and thinking similar things as you. Thanks for cutting away.
It was mostly heavy footed driving late afternoon to enjoy the new music. I'll do a 10-15 mile normal cruise to see about drone. Not that there is any to start with, maybe just a little resonance or drone to some people.

Edit: Just did a 20 miles loop... At 60 mph the exhaust is as quiet as it was stock if not quieter. At 65 mph the story is the same. At 70 mph or about 2300 rpm there is a slight resonance. And at 75 mph is back to the nice and quiet cruise. The exhaust note is very sporty now around town and has the gurgle that I was looking for, accelerating through the gears are with some authority now.

Last edited by HP Autosport; 05-25-2011 at 12:13 PM.
Appreciate 0
      05-26-2011, 11:56 AM   #12
///M1
Brigadier General
///M1's Avatar
United_States
56
Rep
3,090
Posts

 
Drives: Many
Join Date: Feb 2009
Location: 212/305

iTrader: (1)

Garage List
Great job, guys! So the midpipe on the 1///M is the same as on the N54 135i?

If so, that's great news as it means I can re-use my Maddad mids!
__________________
2011 BMW E82 1///M: AW, ZPP+ZCV, HK, Apps; Akra CF+Valve control, MadDad mids, K&N, Forge FMIC, P3gauge, EuroTails, Tint, CF Mirrors+Spoiler+Roof+RevoZ diffuser, 10mm H&R, IND grills+gills, xCDV, LUX AE
2008 Audi B7 RS 4: Sprint Blue, Audi Exclusive Euro Interior, Premium+Titanium Package, EPL Tune, Stasis Ohlins MS coilovers, Milltek valved exhaust+DownPipes, Alcon BBK, Tint, ADR V1, Lidatek, Lamin-X, Strasse Forged SM7 3-piece concave wheels, 275/30/19 PSSs, Euro flat-bottom steering wheel, JHM SSK
Appreciate 0
      05-26-2011, 12:02 PM   #13
Kamal
Indian Stig
Kamal's Avatar
United_States
12
Rep
1,002
Posts

 
Drives: '03 540i M, '11 Ducati M796
Join Date: May 2008
Location: StL/CoMO

iTrader: (1)

Garage List
2008 BMW 135i  [3.78]
2011 BMW 328i  [4.00]
Send a message via AIM to Kamal Send a message via Skype™ to Kamal
Quote:
Originally Posted by Tuned1 View Post
Somebody please dyno this car already!
http://blogs.insideline.com/straight...s-m-coupe.html

331 hp and 362 ft.lbs at the wheels
__________________

2008 E82 N54 || Stage 2 -------- Gone to a good home.
Appreciate 0
      05-26-2011, 12:21 PM   #14
HP Autosport
Lieutenant General
United_States
418
Rep
11,446
Posts

 
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

iTrader: (29)

Quote:
Originally Posted by ///M1 View Post
Great job, guys! So the midpipe on the 1///M is the same as on the N54 135i?

If so, that's great news as it means I can re-use my Maddad mids!
Yes, it is!
Appreciate 0
      05-26-2011, 12:23 PM   #15
///M1
Brigadier General
///M1's Avatar
United_States
56
Rep
3,090
Posts

 
Drives: Many
Join Date: Feb 2009
Location: 212/305

iTrader: (1)

Garage List
Quote:
Originally Posted by HP Autowerks View Post
Yes, it is!
Saweet! Exactly what I wanted to hear!

Thx a lot guys for already tinkering with the car and sharing your findings! Look forward to more updates.
__________________
2011 BMW E82 1///M: AW, ZPP+ZCV, HK, Apps; Akra CF+Valve control, MadDad mids, K&N, Forge FMIC, P3gauge, EuroTails, Tint, CF Mirrors+Spoiler+Roof+RevoZ diffuser, 10mm H&R, IND grills+gills, xCDV, LUX AE
2008 Audi B7 RS 4: Sprint Blue, Audi Exclusive Euro Interior, Premium+Titanium Package, EPL Tune, Stasis Ohlins MS coilovers, Milltek valved exhaust+DownPipes, Alcon BBK, Tint, ADR V1, Lidatek, Lamin-X, Strasse Forged SM7 3-piece concave wheels, 275/30/19 PSSs, Euro flat-bottom steering wheel, JHM SSK
Appreciate 0
      05-26-2011, 09:11 PM   #16
Hind
///Mmmm
Hind's Avatar
United_States
25
Rep
789
Posts

 
Drives: '09 BMW 135i
Join Date: Jun 2008
Location: Tampa, FL

iTrader: (4)

Garage List
Looks good. Any video/sound of these midpipes installed on a 135i w/ a aftermarket muffler?
__________________
Current: E90 LCI 335i JetBlack - BMS OCC, JB4 w/ E85, ETS Charge Pipe, Vishnu Catted DP
Retired:///E82 135i LeMans - 12.710 @ 108 MPH
Riss Racing OCC, Shadowline Grills, Magnaflow Axle-Back, JB4, ETS FMIC, BMS DCI, BMW Perf Sideskirts, BMS 12/10 Spacers, E93 Front Sway
PDC Flickr YouTube
Appreciate 0
      05-26-2011, 09:36 PM   #17
MDORPHN
Colonel
41
Rep
2,549
Posts

 
Drives: AW 1M
Join Date: Oct 2010
Location: Wash, DC

iTrader: (0)

Is this the Berk Technology mid-pipe?

Thanks.

Neil
Appreciate 0
      05-27-2011, 03:05 AM   #18
Trutchy
Private
6
Rep
73
Posts

 
Drives: 1M
Join Date: Mar 2011
Location: Dubai

iTrader: (0)

can we get some audio of the exhaust driving past or away from the camera please?
Appreciate 0
      05-27-2011, 07:49 PM   #19
HP Autosport
Lieutenant General
United_States
418
Rep
11,446
Posts

 
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

iTrader: (29)

Quote:
Originally Posted by Hind View Post
Looks good. Any video/sound of these midpipes installed on a 135i w/ a aftermarket muffler?


Quote:
Originally Posted by MDORPHN View Post
Is this the Berk Technology mid-pipe?

Thanks.

Neil
yes, it is.

can we get some audio of the exhaust driving past or away from the camera please?

Quote:
Originally Posted by Trutchy View Post
can we get some audio of the exhaust driving past or away from the camera please?
Yes, we will be have something in a few days.
Appreciate 0
      06-28-2011, 11:11 PM   #20
HP Autosport
Lieutenant General
United_States
418
Rep
11,446
Posts

 
Drives: F80 M3
Join Date: Mar 2007
Location: Santa Barbara, Brembo, GIAC, Koni, Ohlins, Performance Friction, Quaife, Stoptech, Vorshlag

iTrader: (29)

Quote:
Originally Posted by Trutchy View Post
can we get some audio of the exhaust driving past or away from the camera please?
Here you go!

Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 11:19 AM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST