2010 2011 BMW 5 Series Forum F10
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
 

2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications RSi Downpipe review for F10 535i (n55)
Post Reply
 
Thread Tools Search this Thread
      10-07-2011, 05:36 PM   #23
78mao
Major
78mao's Avatar
Taiwan
132
Rep
1,087
Posts

Drives: F10, F13, current->F80, F15 X5
Join Date: Apr 2010
Location: Socal/Irvine

iTrader: (1)

Garage List
2015 M3 BMW M3  [1.00]
Quote:
Originally Posted by yxc145 View Post
I just got a custom made x-pipe/magnaflow muffler system installed. The sound is good/deep. But It drones like crazy!!! Does anyone of you guys have the same problem with whatever system you have?
magna flows are just known to drone.
i have the full system from them as well actually the prototype custom quad outlet from their corporate facility and they still drone like crazy. i had them fixed it by adding a center resonator/muffler that it got better but the car is wayy quite as well too. its the way their mufflers are manufactured that it causes the droning.
im just glad im finally getting another setup that i have been waiting for a while.
i think kruzn335 should know a solution about the droning.
__________________
Appreciate 0
      10-08-2011, 12:56 AM   #24
yxc145
Captain
United_States
57
Rep
645
Posts

Drives: 2011 535i
Join Date: Jul 2011
Location: Chicago

iTrader: (0)

Quote:
Originally Posted by 78mao View Post
magna flows are just known to drone.
i have the full system from them as well actually the prototype custom quad outlet from their corporate facility and they still drone like crazy. i had them fixed it by adding a center resonator/muffler that it got better but the car is wayy quite as well too. its the way their mufflers are manufactured that it causes the droning.
im just glad im finally getting another setup that i have been waiting for a while.
i think kruzn335 should know a solution about the droning.
I saw another thread that someone is selling an Axle back Magnaflow exhaust. He has the two pipes connected by one pipe. Is that the solution you are talking about?
Appreciate 0
      10-08-2011, 02:15 PM   #25
tdepetra
New Member
1
Rep
15
Posts

Drives: 2011 535xi
Join Date: Aug 2011
Location: Upper Midwest

iTrader: (0)

Did you buy directly from them?What about installation and overall costs? I think a lot of people might do this instead of doing a cat-back or axle-back exhaust mod, so as not to worry about drone or excessive noise (code for wife's complaints).
Appreciate 0
      10-08-2011, 05:32 PM   #26
78mao
Major
78mao's Avatar
Taiwan
132
Rep
1,087
Posts

Drives: F10, F13, current->F80, F15 X5
Join Date: Apr 2010
Location: Socal/Irvine

iTrader: (1)

Garage List
2015 M3 BMW M3  [1.00]
this definately gives the car a more sporty tone rather than getting wayy too loud and definately more power gain then a full cat back exhaust.
__________________
Appreciate 0
      10-09-2011, 01:09 AM   #27
jaekeem
BMW Noobie
jaekeem's Avatar
United_States
57
Rep
360
Posts

Drives: e90 M3 e46 M3 Macan S Model S
Join Date: May 2011
Location: Socal, USA

iTrader: (1)

What I'd like to see/hear personally is the stock resonator removed and this down pipe.
__________________


2011 F10 535i | Build Thread | Power Mods & Dynos
Appreciate 0
      10-09-2011, 02:29 AM   #28
Dr-Euro
Private First Class
Dr-Euro's Avatar
23
Rep
196
Posts

Drives: BMW
Join Date: Oct 2011
Location: Southern California

iTrader: (1)

Quote:
Originally Posted by tdepetra View Post
Did you buy directly from them?What about installation and overall costs? I think a lot of people might do this instead of doing a cat-back or axle-back exhaust mod, so as not to worry about drone or excessive noise (code for wife's complaints).
We built the prototype off the OEM exhaust. The tone change with the OEM system and downpipe is untraceable to the average wife. It is mostly the turbo spool that becomes audibly more present (the sweet sound of performance), as well as a bit more growl from the OEM exhaust. The factory exhaust keeps things pretty mellow, even with a performance downpipe.
The install is easy since there is plenty of clearance and full DIY instructions are available. Install cost $150 and we are currently the only available source for the product.
__________________
Appreciate 0
      10-09-2011, 07:36 AM   #29
tdepetra
New Member
1
Rep
15
Posts

Drives: 2011 535xi
Join Date: Aug 2011
Location: Upper Midwest

iTrader: (0)

Thank you. Can you PM me the price for the downpipes?
Appreciate 0
      10-10-2011, 12:56 AM   #30
Dr-Euro
Private First Class
Dr-Euro's Avatar
23
Rep
196
Posts

Drives: BMW
Join Date: Oct 2011
Location: Southern California

iTrader: (1)

Quote:
Originally Posted by tdepetra View Post
Thank you. Can you PM me the price for the downpipes?
PM Sent
__________________
Appreciate 0
      10-10-2011, 11:05 AM   #31
yxc145
Captain
United_States
57
Rep
645
Posts

Drives: 2011 535i
Join Date: Jul 2011
Location: Chicago

iTrader: (0)

Hi Daniel

will this mod cause any computer/warranty problem? Is there any sensor in the OEM downpipe? also emmission test. any problem at all? Finally, what's the performance gain?
Can you PM me the pricing?
Appreciate 0
      10-11-2011, 10:33 AM   #32
chris@rsituning
United_States
11
Rep
43
Posts

Drives: BMW
Join Date: Oct 2011
Location: Irvine

iTrader: (0)

Quote:
Originally Posted by yxc145 View Post
Hi Daniel

will this mod cause any computer/warranty problem? Is there any sensor in the OEM downpipe? also emmission test. any problem at all? Finally, what's the performance gain?
Can you PM me the pricing?
This is a catless downpipe so it will cause a CEL once it adapts. Tuning is a must with this downpipe. We used Juicebox in our dyno tests. There are 3 bungs on the downpipe. Primary 02 sensor, post cat 02 sensor, and wideband. Power gains were 19WHP & 18WTQ overall. Peak gains of 24WHP & 36WTQ at 3500RPM. PM sent regarding pricing. It is also posted in the commercial section if you would like more detailed information.
Appreciate 0
      10-11-2011, 10:41 AM   #33
yxc145
Captain
United_States
57
Rep
645
Posts

Drives: 2011 535i
Join Date: Jul 2011
Location: Chicago

iTrader: (0)

Quote:
Originally Posted by chris@rsituning View Post
This is a catless downpipe so it will cause a CEL once it adapts. Tuning is a must with this downpipe. We used Juicebox in our dyno tests. There are 3 bungs on the downpipe. Primary 02 sensor, post cat 02 sensor, and wideband. Power gains were 19WHP & 18WTQ overall. Peak gains of 24WHP & 36WTQ at 3500RPM. PM sent regarding pricing. It is also posted in the commercial section if you would like more detailed information.
Ok, now I am gonna sound stupid.

1. What is CEL
2. since it is Catless, will it cause emission issue with city? illegal?
3. What is BUNG?
4. Is this mod easily detectable by dealers and possibly void the warranty?
Appreciate 0
      10-17-2011, 12:52 PM   #34
chris@rsituning
United_States
11
Rep
43
Posts

Drives: BMW
Join Date: Oct 2011
Location: Irvine

iTrader: (0)

Quote:
Originally Posted by yxc145 View Post
Ok, now I am gonna sound stupid.

1. What is CEL
2. since it is Catless, will it cause emission issue with city? illegal?
3. What is BUNG?
4. Is this mod easily detectable by dealers and possibly void the warranty?
CEL = Check Engine Light.

Catless Downpipe = Is meant for off road use only.

BUNG = Where you 02 Sensor threads into.

Warranty = The Mod can be detected by your dealer, and possibly void warranty.

Thank you!
Appreciate 0
      10-18-2011, 11:19 AM   #35
yxc145
Captain
United_States
57
Rep
645
Posts

Drives: 2011 535i
Join Date: Jul 2011
Location: Chicago

iTrader: (0)

Thank you very much, Chris

It sounds like a good performance upgrade, but I am too chicken. I will skip this Mod.
Appreciate 0
      10-20-2011, 12:56 PM   #36
Dr-Euro
Private First Class
Dr-Euro's Avatar
23
Rep
196
Posts

Drives: BMW
Join Date: Oct 2011
Location: Southern California

iTrader: (1)

First few production sets are becoming available soon!
__________________
Appreciate 0
      10-25-2011, 03:05 AM   #37
Dr-Euro
Private First Class
Dr-Euro's Avatar
23
Rep
196
Posts

Drives: BMW
Join Date: Oct 2011
Location: Southern California

iTrader: (1)

First few production pieces are complete! Get'm while you can. Pictures to be posted soon!
__________________
Appreciate 0
      11-13-2011, 12:21 PM   #38
chris@rsituning
United_States
11
Rep
43
Posts

Drives: BMW
Join Date: Oct 2011
Location: Irvine

iTrader: (0)

Quote:
Originally Posted by 78mao View Post
this definately gives the car a more sporty tone rather than getting wayy too loud and definately more power gain then a full cat back exhaust.
Agreed!
__________________
Appreciate 0
      11-14-2011, 03:06 AM   #39
reaper1
New Member
0
Rep
25
Posts

Drives: 535i F10 M Package
Join Date: Sep 2009
Location: USA

iTrader: (0)

How far off is a CAT version downpipe for the f10?
Appreciate 0
      11-14-2011, 09:52 AM   #40
imposss
Lieutenant
imposss's Avatar
Canada
61
Rep
446
Posts

Drives: M4 Comprtetion
Join Date: Aug 2008
Location: Montreal

iTrader: (0)

If I understood right the check engine light will be on all the time if I install those? I don't care about warranty because I know sa in the dealership.
Appreciate 0
      11-18-2011, 12:09 AM   #41
Dr-Euro
Private First Class
Dr-Euro's Avatar
23
Rep
196
Posts

Drives: BMW
Join Date: Oct 2011
Location: Southern California

iTrader: (1)

Quote:
Originally Posted by reaper1 View Post
How far off is a CAT version downpipe for the f10?
We are trying different cats currently. Our goal is to be able to pass tailpipe emissions while not sacrificing too much HP and TQ. Stay posted for updates in our commercial thread!

Quote:
Originally Posted by imposss View Post
If I understood right the check engine light will be on all the time if I install those? I don't care about warranty because I know sa in the dealership.
We are testing a mechanical fix this week in an attempt to eliminate the CEL. We are waiting on an OEM secondary sensor, which is on back-order from BMW, to perform further testing on an electrical fix.
I have contacted Bavarian Technic to see when coding will be available for the F10 (this also somewhat dictates when Stage 2 will be available) - seems like it may be 6+ months...
We should have a fix sooner than later - all updates will be posted in our commercial thread.
__________________
Appreciate 0
      11-18-2011, 08:25 AM   #42
reaper1
New Member
0
Rep
25
Posts

Drives: 535i F10 M Package
Join Date: Sep 2009
Location: USA

iTrader: (0)

Thanks for the info. I am looking for a cat version downpipe with a tuned ECU.
Appreciate 0
      11-19-2011, 06:05 PM   #43
Dr-Euro
Private First Class
Dr-Euro's Avatar
23
Rep
196
Posts

Drives: BMW
Join Date: Oct 2011
Location: Southern California

iTrader: (1)

Quote:
Originally Posted by reaper1 View Post
Thanks for the info. I am looking for a cat version downpipe with a tuned ECU.
PM Sent
__________________
Appreciate 0
      11-26-2011, 12:47 PM   #44
lakerholic
Private First Class
8
Rep
147
Posts

Drives: 2018 530e M-Sport
Join Date: Nov 2011
Location: Orange County, CA

iTrader: (2)

Quote:
Originally Posted by reaper1 View Post
Thanks for the info. I am looking for a cat version downpipe with a tuned ECU.
Same here.

If you could email me info once this is available I would greatly appreciate it. I'm too new to send private messages

Lakerholic AT aol DOT com

Thanks,

Eddie
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



All times are GMT -5. The time now is 07:31 AM.




5post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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