E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod.



Reply
 
Thread Tools Search this Thread
      07-18-2009, 04:42 PM   #287
NiVeDh
Major General
NiVeDh's Avatar
United_States
189
Rep
8,017
Posts

Drives: '08 E90 335i, '99 E36 M3
Join Date: Apr 2009
Location: Houston, TX & Atlanta, GA

iTrader: (132)

Garage List
Quote:
Originally Posted by 200Duece View Post
This thread needs to be locked. this all has nothing to do with the DIY
How does this have nothing to do with the DIY?
Appreciate 0
      07-18-2009, 04:53 PM   #288
**335i**
Colonel
**335i**'s Avatar
Switzerland
42
Rep
2,317
Posts

Drives: TOYOTA & 2008 E92 335i 6MT
Join Date: Jul 2007
Location: Swiss

iTrader: (4)

Garage List
2008 335i  [4.50]
This all are one diy
__________________
E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm)
Appreciate 0
      07-18-2009, 11:22 PM   #289
labedra
First Lieutenant
labedra's Avatar
United_States
6
Rep
314
Posts

Drives: 2008 BMW 335i E92 6 MT
Join Date: Jun 2009
Location: Somewhere on Planet Earth for now.

iTrader: (2)

Quote:
Originally Posted by turkish335 View Post
why would the engine have to work harder? if you reduce the exhaust restriction, what do you think happens to the engine?
You didn't understand what I stated. I said the sound is a little deeper when you are driving since the engine has to work harder as it has to pull the wight of the car opposed to standing still and just revving the engine, common sense .......
__________________

.../// TURBO! Why in the world would you choose anything else?... ///
Appreciate 0
      07-22-2009, 01:32 PM   #290
Jrlelli
Private First Class
3
Rep
188
Posts

Drives: 2009 335xi
Join Date: Jun 2009
Location: vineland, new jersey

iTrader: (0)

ok well, i tried this mod. sound is noticeably different. really didn't loose any gas mileage. still around 26mpg. depending tho if i mash the pedal, it goes down, obviously. i may plug it back in. giving it a week or two.
Appreciate 0
      07-25-2009, 05:12 PM   #291
200Duece
Colonel
200Duece's Avatar
28
Rep
2,568
Posts

Drives: '73 2002,'12 X5 35d,'03 540iT
Join Date: Jan 2007
Location: A Whale's Vagina, Ca

iTrader: (5)

Quote:
Originally Posted by NiVeDh View Post
How does this have nothing to do with the DIY?
Because it is a simple mod that increases the sound at "cold idle". That is the ONLY thing the valve that we are opening does. Reduce noise at cold idle. There is no performance gain or loss with this. PERIOD
__________________


1988 E28 535is Euro Conversion --- sold
2009 E90 335 6MT --- sold
Appreciate 0
      07-31-2009, 06:03 AM   #292
creepy coupe
Major General
creepy coupe's Avatar
462
Rep
9,924
Posts

Drives: Mazda 6
Join Date: Aug 2007
Location: UK

iTrader: (2)

Garage List
2015 BMW 435d  [0.00]
2009 335i  [0.00]
The flap is for drive by noise regulations, nothing to do with Cat warming up faster, I had a BMW performance exhaust fitted to my 135i and they just cable tied and tucked the vacume hose up under rear valance.

I've no done the mod to my 335i and although not as noticable as the 135i, it's still an improvemnt IMO
Appreciate 0
      07-31-2009, 01:02 PM   #293
**335i**
Colonel
**335i**'s Avatar
Switzerland
42
Rep
2,317
Posts

Drives: TOYOTA & 2008 E92 335i 6MT
Join Date: Jul 2007
Location: Swiss

iTrader: (4)

Garage List
2008 335i  [4.50]
Bwm should not put those valves into one of 335i exhaust it's just lame
__________________
E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm)
Appreciate 0
      07-31-2009, 01:20 PM   #294
200Duece
Colonel
200Duece's Avatar
28
Rep
2,568
Posts

Drives: '73 2002,'12 X5 35d,'03 540iT
Join Date: Jan 2007
Location: A Whale's Vagina, Ca

iTrader: (5)

Stop Posting. This Is A DIY, Not A Thread
__________________


1988 E28 535is Euro Conversion --- sold
2009 E90 335 6MT --- sold
Appreciate 0
      07-31-2009, 05:06 PM   #295
FoShizzle
aka Mike
FoShizzle's Avatar
No_Country
53
Rep
1,379
Posts

Drives: AW E92 335is
Join Date: Jun 2008
Location: LA/Ventura, CA

iTrader: (11)

Quote:
Originally Posted by 200Duece View Post
Stop Posting. This Is A DIY, Not A Thread
Those are some big letters you got there. Everybody else is rollin size 10's and then BOOYAA! you bust out the 25's.
Appreciate 0
      08-01-2009, 02:37 AM   #296
**335i**
Colonel
**335i**'s Avatar
Switzerland
42
Rep
2,317
Posts

Drives: TOYOTA & 2008 E92 335i 6MT
Join Date: Jul 2007
Location: Swiss

iTrader: (4)

Garage List
2008 335i  [4.50]
+1 Lol
__________________
E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm)
Appreciate 0
      10-13-2009, 12:39 PM   #297
Bandarof
Impossible is Nothing
Bandarof's Avatar
Saudi Arabia
1
Rep
86
Posts

Drives: 08' white/red 335i
Join Date: Jun 2009
Location: Saudi Arabia

iTrader: (0)

Garage List
2008 e92 335i  [0.00]
Danger

Sorry guys, I know it's a diy but I been looking and thinking about it for days and I need to share this info with everyone here.

I was very hesitant to buy the first bmw twin turbo engine, because I know how sensitive turbo's are, and I know that you need to warm up the turbo well enough before moving or else you will damage your turbo's. So ever since I got my car, I wouldn't move after startin' the engine until I hear the valve actually open.

BMW used week wastegates for the turbos and if you don't take care of them, I can guarantee that they will break, many peopl eare facing this problem and selling their cars, and getting turbo's replaced under warantee and still having that horrible sound coming from the engine.

http://www.e90post.com/forums/showthread.php?t=310531

I would never move the car until the engine have fully warmed up and the exhaust valve opened, try it, leave your window open and wait for 5 minutes and you will literally hear the valve open and the sound change.

Peace out
__________________

08' 335i WHT/RED MT6
01' 323Ci TPZ BLU/GRY MT6
88' 750iL BLU/GRY
85' 745i Carbonite/Buffalo Turbo Injectors
Appreciate 0
      10-13-2009, 12:42 PM   #298
Bandarof
Impossible is Nothing
Bandarof's Avatar
Saudi Arabia
1
Rep
86
Posts

Drives: 08' white/red 335i
Join Date: Jun 2009
Location: Saudi Arabia

iTrader: (0)

Garage List
2008 e92 335i  [0.00]
http://s195.photobucket.com/albums/z...oise_after.flv
__________________

08' 335i WHT/RED MT6
01' 323Ci TPZ BLU/GRY MT6
88' 750iL BLU/GRY
85' 745i Carbonite/Buffalo Turbo Injectors
Appreciate 0
      10-13-2009, 08:41 PM   #299
Mech_Man
I'm feeling much better now, Dave
Mech_Man's Avatar
United_States
5
Rep
300
Posts

Drives: 2008 335i e92 (MontegoBlue/Bk)
Join Date: May 2008
Location: Triangle, NC

iTrader: (0)

First, I know some turbos are quite rugged, as I had a 1982 Datson 280z turbo for 120k miles, from new. I drove it hard and fast, never a warm-up or spin-down.
Actually, it had a problem, where the oil seal would give out about 70k. They found out about it and extended the factory warantee. I had to replace mine at 80k. But it drove fine till I sold it.

Next, you should look around the forums using the key words Waste-Gate rattle and Turbo Lag. There were many threads for a while about how some turbo waste gate pivot points were failing, and how BMW reprogrammed the car to open the gates later. Which stopped the rattle but introduced the dread TurboLag. (Keywords progman 29.2). See
http://www.e90post.com/forums/showthread.php?t=186936
But this was a problem with the wastegate, not the turbo itself.
__________________
-=] 2008 335i e92 Montego Blue & Black; Prem; Sport; AT-paddles
-=] Mods= VEI Digital Boost Gauge in RiXeffects custom Pod
-=] Tinted (front: 3M Crystalline 70); (rear: Johnson InsulatIR 40 ceramic); 3M ClearBra
Appreciate 0
      11-04-2009, 09:15 PM   #300
derek1822
Private
Canada
0
Rep
73
Posts

Drives: 2009,335xi, 19" GS1...
Join Date: Aug 2009
Location: Vancouver,BC

iTrader: (2)

Garage List
i tried and it works! Nice sound but still not sure any effects on the car or ECU.
Appreciate 0
      11-04-2009, 09:17 PM   #301
Pseudo Nim
twinborific
Pseudo Nim's Avatar
60
Rep
4,766
Posts

Drives: fast, sometimes slow
Join Date: Nov 2008
Location: i am a citizen of the world

iTrader: (9)

As has been said several times, there's no effect on the car or ECUs. I've ran this mod for about 8 months now, and no positive or negative effect. Just sounds "better" at low RPMs, especially in a tunnel.
__________________
Appreciate 0
      11-04-2009, 10:54 PM   #302
lawwailok
Lieutenant Colonel
lawwailok's Avatar
United_States
41
Rep
1,926
Posts

Drives: E90 335i, E70 X5
Join Date: Aug 2009
Location: Sacramento, CA

iTrader: (18)

Garage List
it might be a hit or miss. some get codes, some don't.
but i ran with the "unplug" for 2 days, then scan with BT, it had a code stored.
__________________
-eric
E90 335i TiAg *STOCK* see my garage for mod list..
E70 X5 SGM *try to stay stock* :/
Appreciate 0
      11-04-2009, 10:57 PM   #303
Pseudo Nim
twinborific
Pseudo Nim's Avatar
60
Rep
4,766
Posts

Drives: fast, sometimes slow
Join Date: Nov 2008
Location: i am a citizen of the world

iTrader: (9)

I think everyone will get a code if you do the unplug trick. But it's not a serious code; doubt they will care.
__________________
Appreciate 0
      11-05-2009, 01:08 AM   #304
k8dgr8
k8dgr8
United_States
1
Rep
121
Posts

Drives: e92 coupe
Join Date: Aug 2009
Location: hawaii

iTrader: (1)

LOL just tried it.. no errors showed up.. pretty sweet!!!
Appreciate 0
      11-06-2009, 03:14 PM   #305
TwinSnailz
New Member
TwinSnailz's Avatar
0
Rep
17
Posts

Drives: 2008 550i M
Join Date: Nov 2009
Location: IL

iTrader: (0)

Tried it this morning, Idles rough. Drive it for a bit, nice sound but i rather have it running smooth as it used to. Plug it back in, smooth now. I'll keep it like that
Appreciate 0
      11-10-2009, 05:58 AM   #306
JaSMine310
Private First Class
JaSMine310's Avatar
Philippines
1
Rep
182
Posts

Drives: Alpine e90/ Brilliant Red e30
Join Date: Feb 2008
Location: 310e30

iTrader: (3)

great mod i luv it
Appreciate 0
      11-11-2009, 12:37 PM   #307
map
Registered
0
Rep
1
Posts

Drives: 2009, 335i, e92 coupe
Join Date: Nov 2009
Location: Ft. Lauderdale

iTrader: (0)

As far as dealer detecting this Mod

I bought my car (2009 335i coupe) from Vista BMW used with 1800 miles last April. When I went to do this MOD myself and found it had already been done by the previous owner. Have never seen a warning light or had any problems at all with the car. On cold mornings will get the occasional backfire at cold starts.

The fact that BMW inspected the car and ran the systems and sold the car too me with the mod in place makes me doubt they can detect the mod or care.
Appreciate 0
      11-18-2009, 11:38 AM   #308
**335i**
Colonel
**335i**'s Avatar
Switzerland
42
Rep
2,317
Posts

Drives: TOYOTA & 2008 E92 335i 6MT
Join Date: Jul 2007
Location: Swiss

iTrader: (4)

Garage List
2008 335i  [4.50]
comon guys, dont play with engine problems
__________________
E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm)
Appreciate 0
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 -4. The time now is 10:16 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, 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