E90Post
 


Extreme Powerhouse
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 JB4 Tune Idea



Reply
 
Thread Tools Search this Thread
      12-26-2011, 04:58 PM   #1
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
272
Rep
3,360
Posts

Drives: 2019 M5C
Join Date: Jan 2010
Location: USA

iTrader: (14)

N55 JB4 Tune Idea

So just throwing this out there. my catless n55 is loud enough to set off car alarms on cold start, however if I hold it at about 1200 RPM, it is much quieter, at almost a reasonable level. How about a feature that holds RPM to that level until it warms up? Thoughts?
Appreciate 0
      12-26-2011, 05:14 PM   #2
Abear
Private First Class
10
Rep
168
Posts

Drives: 2011 335i
Join Date: Aug 2011
Location: Houston

iTrader: (3)

I like mine being loud. Plus it only takes a about 10-20 seconds before it quiets down...at least for mine.
Appreciate 0
      12-29-2011, 05:10 AM   #3
E.Ameen
Enlisted Member
0
Rep
31
Posts

Drives: 335i-n55
Join Date: Dec 2011
Location: Bahrain

iTrader: (0)

>>>
Appreciate 0
      12-29-2011, 05:35 AM   #4
FrankiE90
Major General
FrankiE90's Avatar
United_States
653
Rep
8,801
Posts

Drives: Krooked Sk8board
Join Date: Feb 2008
Location: Pasadena, Ca

iTrader: (11)

-_-
__________________
FrankiE90 AKA:.[The TANK] *CLICK THE SIG
E90s (been gone but not forgotten) • KW clubsports • • • • • • • • • • 18" BBS GT4 // Build E30 (pending) + E46 M3 Wagon ESTORIL Blue
Appreciate 0
      12-29-2011, 07:23 AM   #5
mashimarho
BimmerPost Supporting Vendor
mashimarho's Avatar
2098
Rep
13,873
Posts


Drives: E92 M3 & F80 M3 & G82 M4
Join Date: Mar 2010
Location: Lynnwood, WA

iTrader: (45)

Garage List
Set off alarms.
__________________
Mashimarho.com /// Instagram /// Facebook /// Youtube /// sales@mashimarho.com /// (425) 582-7939
Appreciate 0
      12-29-2011, 01:01 PM   #6
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
272
Rep
3,360
Posts

Drives: 2019 M5C
Join Date: Jan 2010
Location: USA

iTrader: (14)

lol I guess this is not a universal problem
Appreciate 0
      12-29-2011, 04:13 PM   #7
BavarianMotorWorks
Captain
68
Rep
625
Posts

Drives: 2011 e90 335i xDrive
Join Date: Mar 2009
Location: NJ

iTrader: (11)

Nope I feel the same as you do. The cold start on the n55 is LOUD especially with a catless downpipe. The only solution I feel is that BMW can offer a software update to quiet down the cold start.
Appreciate 0
      12-29-2011, 06:42 PM   #8
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
272
Rep
3,360
Posts

Drives: 2019 M5C
Join Date: Jan 2010
Location: USA

iTrader: (14)

Quote:
Originally Posted by davidjbak View Post
Nope I feel the same as you do. The cold start on the n55 is LOUD especially with a catless downpipe. The only solution I feel is that BMW can offer a software update to quiet down the cold start.
Well, or a piggyback unit like vishnu or BMS could do it. I doubt BMW cares too much about people running catless.. their official response would be like "ein ha ha ha mit ha ha ha mit scheisse"
Appreciate 0
      04-26-2012, 12:01 PM   #9
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
272
Rep
3,360
Posts

Drives: 2019 M5C
Join Date: Jan 2010
Location: USA

iTrader: (14)

You know what, I am bumping this. The cold start on my car is almost as loud as WOT. I would love to get a more aggressive exhaust, even a race setup, but the cold start would be obnoxious to neighbors and deafening.

It's avoidable if you give it a slight bit of throttle for about 20 seconds and try to hold it at a steady low rpm, but what a hassle.

For JB4 owners, I think Terry should program a "quiet cold-start" option where JB4 sets idle to ~1200 rpm for the first 20 seconds of a cold start. I believe this would eliminate the disproportionately loud start-up that catless N55 owners have been dealing with. I think this would a great value-added feature also.

Feedback from catless N55 owners?
__________________
2019 M5C Matte MBB / Tartufo
Appreciate 0
      04-26-2012, 12:05 PM   #10
madmanhiker
Lieutenant Colonel
madmanhiker's Avatar
United_States
82
Rep
1,615
Posts

Drives: '11 E92 335i
Join Date: Jul 2008
Location: Jacksonville, Fl

iTrader: (5)

Garage List
*sigh. I can't EVER leave the house w/o my wife knowing. Even in a deep slumber she wakes when I start the car in the garage... and we live in a large home... and she is on the other side of the house, the farthest away you could be. It's loud on a cold start up for sure!!
__________________
-madmanhiker jax,fl
Appreciate 0
      04-26-2012, 12:07 PM   #11
madmanhiker
Lieutenant Colonel
madmanhiker's Avatar
United_States
82
Rep
1,615
Posts

Drives: '11 E92 335i
Join Date: Jul 2008
Location: Jacksonville, Fl

iTrader: (5)

Garage List
Quote:
Originally Posted by IancoleTX View Post
obnoxious to neighbors and deafening....a "quiet cold-start" option where JB4 sets idle to ~1200 rpm for the first 20 seconds of a cold start..."

first part.. 100% - I feel the same - they all look at me like I do it on purpose.

second part - 100% agree - send the idea to Terry....
__________________
-madmanhiker jax,fl
Appreciate 0
      04-26-2012, 01:37 PM   #12
jeff2.0t
Second Lieutenant
38
Rep
229
Posts

Drives: 2018 X3M40i, 2019 M4
Join Date: Oct 2010
Location: Montreal

iTrader: (0)

Yeah it is loud even stock...
Appreciate 0
      04-26-2012, 01:47 PM   #13
Sam335ix
Major
Sam335ix's Avatar
65
Rep
1,274
Posts

Drives: 335 ix performance edition
Join Date: Sep 2011
Location: Redskin Country

iTrader: (0)

You can hear my car at a cold start from 8 houses down... I like it loud :-)
Appreciate 0
      04-26-2012, 02:30 PM   #14
Kalud
Lieutenant
Kalud's Avatar
24
Rep
582
Posts

Drives: e92 335i
Join Date: Jun 2010
Location: Canada

iTrader: (0)

Its universal, stock its loud, with a DP its even louder and even more with golf tee mod.

I use the slight steady throttle to ~1000-1200 RPM on cold start when I want it quiet, you get use to it.
Appreciate 0
      04-26-2012, 02:38 PM   #15
sA x sKy
Sameet
sA x sKy's Avatar
Bangladesh
739
Rep
2,541
Posts

Drives: AY/B M4 '15
Join Date: Apr 2010
Location: Long Island, New York

iTrader: (3)

Garage List
2015 BMW M4  [0.00]
I live in a cul-da-sac..the house next to me has a Maserati GranTurismo, the house next to them has a Shelby Cobra, and the house next to them has a Ferrari F430..so you can imagine, fuck my neighbors. I wish I was exponentially louder..I might trade my exhaust for an Eisenmann Race and maybe then it'll be loud enough
Appreciate 0
      04-26-2012, 02:44 PM   #16
Kalud
Lieutenant
Kalud's Avatar
24
Rep
582
Posts

Drives: e92 335i
Join Date: Jun 2010
Location: Canada

iTrader: (0)

Quote:
Originally Posted by sA x sKy View Post
I live in a cul-da-sac..the house next to me has a Maserati GranTurismo, the house next to them has a Shelby Cobra, and the house next to them has a Ferrari F430..so you can imagine, fuck my neighbors. I wish I was exponentially louder..I might trade my exhaust for an Eisenmann Race and maybe then it'll be loud enough
Appreciate 0
      04-26-2012, 02:54 PM   #17
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
272
Rep
3,360
Posts

Drives: 2019 M5C
Join Date: Jan 2010
Location: USA

iTrader: (14)

Quote:
Originally Posted by Kalud View Post
Its universal, stock its loud, with a DP its even louder and even more with golf tee mod.

I use the slight steady throttle to ~1000-1200 RPM on cold start when I want it quiet, you get use to it.
Yes, a tune feature that did this automatically would eliminate super loud cold start for those of us which find it obnoxious.
__________________
2019 M5C Matte MBB / Tartufo
Appreciate 0
      04-26-2012, 03:00 PM   #18
Kalud
Lieutenant
Kalud's Avatar
24
Rep
582
Posts

Drives: e92 335i
Join Date: Jun 2010
Location: Canada

iTrader: (0)

Quote:
Originally Posted by IancoleTX View Post
Yes, a tune feature that did this automatically would eliminate super loud cold start for those of us which find it obnoxious.
I don't know exactly what is the source of the higher noise level but it might simply be a wastegate position that is more open than usual. If so it should be an easy feature to code.

I can log the wastegate on cold and warm start to see if its the case...
Appreciate 0
      04-26-2012, 03:17 PM   #19
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
272
Rep
3,360
Posts

Drives: 2019 M5C
Join Date: Jan 2010
Location: USA

iTrader: (14)

Quote:
Originally Posted by Kalud View Post
I don't know exactly what is the source of the higher noise level but it might simply be a wastegate position that is more open than usual. If so it should be an easy feature to code.

I can log the wastegate on cold and warm start to see if its the case...
Interesting. I would like to hear more.
__________________
2019 M5C Matte MBB / Tartufo
Appreciate 0
      04-26-2012, 04:03 PM   #20
SRT14PimPin07
Major
SRT14PimPin07's Avatar
Armenia
76
Rep
1,035
Posts

Drives: X5
Join Date: Jun 2009
Location: Los Angeles

iTrader: (4)

I'm in....even though I don't have a catless DP, I have a muffler delete and it's still loud at cold start. I'm sure my neighbors hate me every Mon and Wed when I start up my car at 6 A.M.
__________________
2011 Alpine White E92 335i M-Sport N55 Engine
Appreciate 0
      04-29-2012, 12:08 AM   #21
fweddy
New Member
1
Rep
13
Posts

Drives: 335i Coupe N55
Join Date: Jan 2012
Location: N/A

iTrader: (0)

hey i'd wish my car was "cold start" loud everywhere i go..
Appreciate 0
      04-29-2012, 12:46 AM   #22
persian54
Lieutenant General
persian54's Avatar
United_States
922
Rep
15,818
Posts

Drives: M760/G83M4
Join Date: Jun 2009
Location: The Valley, SoCal

iTrader: (298)

Assuming the N55 is similar to the S65, this is part of the start up cycle to get the cats warmed up quickly (whether you have cats or not, the BMW cycle works as if you have them [unless you tune/modify the software])

on the S65, it's easy to turn off this feature with a flash tune.
We don't have piggybacks so I cannot comment if it's possible on a piggyback

Not a bad idea though.
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



All times are GMT -5. The time now is 04:27 PM.




e90post
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