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
      11-25-2012, 11:52 PM   #1
s2pidfda
0
Henry
 
s2pidfda's Avatar
 
Drives: 2011 128i Coupe Space Grey 6MT
Join Date: Jan 2012
Location: Toronto

Posts: 57
iTrader: (0)

128i PERFORMANCE EXHAUST + CAT DELETE?

What do you guys think about doing a cat delete with BMW performance exhaust already installed?

or ?

Thanks!
__________________
128i Coupe 6MT | BMW Performance Exhaust + Short Shifter | KW V3 Coil-Over | CF Roof Wrap | CF Pedals | Matte Black Grills | CF Trunk Spoiler | HID Angel Eyes | 20%Tint | Plastidipped OEM Rims + Spacers | Badge Delete | Goodrich Brakelines | HP+ | Motul RBF 600

s2pidfda is offline   Canada
Appreciate 0
Reply With Quote
      11-25-2012, 11:55 PM   #2
the1andonly
5
Lieutenant
 
Drives: black on black 128i manual
Join Date: Jan 2012
Location: midwest

Posts: 533
iTrader: (0)

I'm looking to install Performance Exhaust on my 128i...how does it sound compared to stock, will I hear a noticeable difference?
the1andonly is offline  
Appreciate 0
Reply With Quote
      11-26-2012, 12:29 AM   #3
s2pidfda
0
Henry
 
s2pidfda's Avatar
 
Drives: 2011 128i Coupe Space Grey 6MT
Join Date: Jan 2012
Location: Toronto

Posts: 57
iTrader: (0)

It sounds great! You'll never regret going with it.

Find this link below with 2 different users who have installed Magnaflow and Performance exhaust. Give you a picture of both exhausts on the 128i. Enjoy!

http://www.1addicts.com/forums/showthread.php?t=735461
__________________
128i Coupe 6MT | BMW Performance Exhaust + Short Shifter | KW V3 Coil-Over | CF Roof Wrap | CF Pedals | Matte Black Grills | CF Trunk Spoiler | HID Angel Eyes | 20%Tint | Plastidipped OEM Rims + Spacers | Badge Delete | Goodrich Brakelines | HP+ | Motul RBF 600

s2pidfda is offline   Canada
Appreciate 0
Reply With Quote
      11-26-2012, 12:36 AM   #4
Greenkirby21
26
Vrooom :)
 
Greenkirby21's Avatar
 
Drives: C7 Stringray
Join Date: Jun 2010
Location: Dream Land

Posts: 2,607
iTrader: (1)

Send a message via AIM to Greenkirby21
Quote:
Originally Posted by s2pidfda View Post
What do you guys think about doing a cat delete with BMW performance exhaust already installed?

or ?

Thanks!
if you remove the cats will you be legal and pass emissions testing? if so, I would say its worth it. The CATs and headers are normally what is restrictive. Also, which cats? Does your car have two sets(secondary and primary), and if so, which ones do you want to remove?
__________________
2014 C7 Corvette Stringray - Laguna Blue - NPP Exhaust - Competition Seats

Last edited by Greenkirby21; 11-26-2012 at 01:47 AM.
Greenkirby21 is offline   United_States
Appreciate 0
Reply With Quote
      11-26-2012, 12:38 AM   #5
Hops128i
4
Lieutenant
 
Drives: 2010 128i, manual, sport pkg
Join Date: Aug 2010
Location: Silver Spring, Maryland

Posts: 446
iTrader: (0)

the BMW PE for the 128i is just a muffler, probably overpriced, but I've really enjoyed it. I installed myself, and isn't too bad. No welding is required, there's a decent DIY on this forum.
The sound isn't too aggressive, but not soft either, really think the PE should come with sports package.
__________________
2010 128i manual, sport package, performance exhaust, Vorshlag camber plates, 245/45/17 ZII square on et 40 with rolled rear fenders.
Hops128i is offline  
Appreciate 0
Reply With Quote
      11-26-2012, 09:13 AM   #6
andrey_gta
35
Brigadier General
 
andrey_gta's Avatar
 
Drives: 130i coupé ;)
Join Date: Nov 2011
Location: Bimmerpost

Posts: 3,314
iTrader: (1)

Garage List
2008 BMW 128i  [0.00]
Quote:
Originally Posted by s2pidfda View Post
What do you guys think about doing a cat delete with BMW performance exhaust already installed?

or ?

Thanks!
Secondary cat? Yes
a bit More loud & more power - up 10 hp
Its a bit tricky for 128i due to the placement of the cats, a shop will have to bend or get ~60degree pipes


emission issues shouldn't be a problem. Just warm up the car for 20 min. Also for Ontario, i dont need to do emissions for 2 more years, you probably for 5 more , incase u want headers down the line.

Btw, saw your car again on near at the Finch Go.
__________________
128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is

Last edited by andrey_gta; 11-26-2012 at 09:28 AM.
andrey_gta is offline   Canada
Appreciate 0
Reply With Quote
      05-13-2014, 02:00 PM   #7
tuphdc
1
Private First Class
 
Drives: 09 BMW 128i 6MT Sport Pkg
Join Date: Apr 2013
Location: King of Prussia, PA

Posts: 145
iTrader: (0)

does anyone have any thoughts on how much it would/should cost to have the 2nd cats removed on a 128i?
tuphdc is offline  
Appreciate 0
Reply With Quote
      05-13-2014, 02:19 PM   #8
TheSt|G
45
Resident Tamed Racing Driver
 
TheSt|G's Avatar
 
Drives: 911, 130is, E39 M5, E36 M3
Join Date: Mar 2008
Location: Outside Philly

Posts: 4,242
iTrader: (2)

Quote:
Originally Posted by tuphdc View Post
does anyone have any thoughts on how much it would/should cost to have the 2nd cats removed on a 128i?
You realize you won't be able to physically feel the gain, correct?
__________________
130is MSport 6MT/ SuperSprint Headers & Exhaust with Swain Tech Race Coat / DISA Manifold / EVOLVE Tune / TCK DA Coilovers / Euro CF Intake/Box / BMW v1 Wheel / BBS RGRs with PSS / F30 Brake Shield / BMW CF Spoiler & Diffuser / Blackline Tails / Rear Fogs Enabled / Front Fogs Delete / CDV Delete / BMW Black Kidneys / M5 Illuminated Knob / BMW Stripe
TheSt|G is offline   United_States
Appreciate 0
Reply With Quote
      05-13-2014, 03:02 PM   #9
cmcdonald
2
Second Lieutenant
 
cmcdonald's Avatar
 
Drives: 2012 BMW 128i
Join Date: Dec 2013
Location: Chicago, IL

Posts: 216
iTrader: (0)

A cat delete shouldn't be more than $150-200 depending on the shop. Some shops will not do this work though due to the fines they can face for removing emissions equipment on a street car. Also I would not do this with the PE. I did a res delete with my PE and it was WAY too loud. Put a very small res back in and it was fine. I think with a cat delete you will be too loud and not like it. Just my two cents though
cmcdonald is offline   United_States
Appreciate 0
Reply With Quote
      05-13-2014, 03:07 PM   #10
MarkkyyMan
6
Captain
 
MarkkyyMan's Avatar
 
Drives: 2010 BMW 128i
Join Date: Dec 2009
Location: Indiana, U.S.

Posts: 617
iTrader: (0)

From what I've read on multiple threads involving the N52 you will just get a little more noise and little to no additional power from a secondary cat delete.

It's your car and ultimately your persinal preference. Read around on the 1addicts forum and even e90post.
MarkkyyMan is offline   United_States
Appreciate 0
Reply With Quote
      05-13-2014, 03:12 PM   #11
tuphdc
1
Private First Class
 
Drives: 09 BMW 128i 6MT Sport Pkg
Join Date: Apr 2013
Location: King of Prussia, PA

Posts: 145
iTrader: (0)

Quote:
Originally Posted by TheSt|G View Post
You realize you won't be able to physically feel the gain, correct?
That may be true....I am still interested in having it done, if it's a relatively inexpensive thing to do.
tuphdc is offline  
Appreciate 0
Reply With Quote
      05-13-2014, 03:13 PM   #12
tuphdc
1
Private First Class
 
Drives: 09 BMW 128i 6MT Sport Pkg
Join Date: Apr 2013
Location: King of Prussia, PA

Posts: 145
iTrader: (0)

Quote:
Originally Posted by cmcdonald View Post
A cat delete shouldn't be more than $150-200 depending on the shop. Some shops will not do this work though due to the fines they can face for removing emissions equipment on a street car. Also I would not do this with the PE. I did a res delete with my PE and it was WAY too loud. Put a very small res back in and it was fine. I think with a cat delete you will be too loud and not like it. Just my two cents though
A cat delete only would be too loud? I thought the resonator was solely responsible for the sound deadening?
tuphdc is offline  
Appreciate 0
Reply With Quote
      05-13-2014, 03:17 PM   #13
cmcdonald
2
Second Lieutenant
 
cmcdonald's Avatar
 
Drives: 2012 BMW 128i
Join Date: Dec 2013
Location: Chicago, IL

Posts: 216
iTrader: (0)

Resonators have the job of deadening sound but cats do so as well as a byproduct of doing their job. Cats restrict exhaust flow in order to do their job and the restriction of flow does quiet the exhaust down a bit.
cmcdonald is offline   United_States
Appreciate 0
Reply With Quote
      05-14-2014, 01:24 AM   #14
George125ie82
0
New Member
 
Drives: 2008 BMW 125i e82
Join Date: May 2014
Location: Melbourne

Posts: 11
iTrader: (0)

Getting my mid resonator deleted on my 125i next week. They are also cleaning out the stock rear muffler of any sound deading instrument's. Only costing $250. Will post a video once its completed. Im expecting the same sounds as a performance exhaust if not louder.
George125ie82 is offline  
Appreciate 0
Reply With Quote
      05-14-2014, 06:20 AM   #15
viciousgook
7
Captain
 
viciousgook's Avatar
 
Drives: BBC
Join Date: Apr 2013
Location: Sydney, Australia

Posts: 714
iTrader: (1)

Quote:
Originally Posted by George125ie82 View Post
Getting my mid resonator deleted on my 125i next week. They are also cleaning out the stock rear muffler of any sound deading instrument's. Only costing $250. Will post a video once its completed. Im expecting the same sounds as a performance exhaust if not louder.
So you're pretty much going to run a straight pipe? It's really going to sound nothing like the PE, in-fact it'll probably be deafening loud
viciousgook is offline   Australia
Appreciate 0
Reply With Quote
      05-14-2014, 06:44 AM   #16
George125ie82
0
New Member
 
Drives: 2008 BMW 125i e82
Join Date: May 2014
Location: Melbourne

Posts: 11
iTrader: (0)

Quote:
Originally Posted by viciousgook View Post
So you're pretty much going to run a straight pipe? It's really going to sound nothing like the PE, in-fact it'll probably be deafening loud
From what i have read the PE is the same as the stock 125i exhaust minus all the sound deadening inside. but deleting the mid resonator should make it more raspy and make it crackle and pop more. Im quite interested to see the outcome. Ill video it and share it with everyone so you can compare it for yourseleves. Its definitely a cheaper alternative. louder the better for me lol
George125ie82 is offline  
Appreciate 0
Reply With Quote
      05-14-2014, 07:28 AM   #17
TheSt|G
45
Resident Tamed Racing Driver
 
TheSt|G's Avatar
 
Drives: 911, 130is, E39 M5, E36 M3
Join Date: Mar 2008
Location: Outside Philly

Posts: 4,242
iTrader: (2)

Quote:
Originally Posted by tuphdc View Post
That may be true....I am still interested in having it done, if it's a relatively inexpensive thing to do.
To what end?
__________________
130is MSport 6MT/ SuperSprint Headers & Exhaust with Swain Tech Race Coat / DISA Manifold / EVOLVE Tune / TCK DA Coilovers / Euro CF Intake/Box / BMW v1 Wheel / BBS RGRs with PSS / F30 Brake Shield / BMW CF Spoiler & Diffuser / Blackline Tails / Rear Fogs Enabled / Front Fogs Delete / CDV Delete / BMW Black Kidneys / M5 Illuminated Knob / BMW Stripe
TheSt|G is offline   United_States
Appreciate 0
Reply With Quote
      05-15-2014, 03:43 AM   #18
Pothole
1
Private First Class
 
Pothole's Avatar
 
Drives: BMW 125i vert M-pack
Join Date: Sep 2013
Location: Netherlands

Posts: 184
iTrader: (0)

Quote:
Originally Posted by TheSt|G View Post
To what end?
Stig, do you still have the secondary cat on your car?
__________________
BMW E88 125i - Tunex Tuned@ 228whp - Cyba Scoops - Performance Kidneys - Performance Exhaust - Golf Tee - FK coilovers - And soon: Klutch SL14

Pothole is offline   Netherlands
Appreciate 0
Reply With Quote
      05-15-2014, 06:21 AM   #19
TheSt|G
45
Resident Tamed Racing Driver
 
TheSt|G's Avatar
 
Drives: 911, 130is, E39 M5, E36 M3
Join Date: Mar 2008
Location: Outside Philly

Posts: 4,242
iTrader: (2)

Quote:
Originally Posted by Pothole View Post
Stig, do you still have the secondary cat on your car?
Yes. Free high flow cats from the factory that make it an easy daily driver from the lack of smell.
TheSt|G is offline   United_States
Appreciate 0
Reply With Quote
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 07:28 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