E90Post
 


GT Haus
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > JB+ 75% review



Reply
 
Thread Tools Search this Thread
      04-10-2009, 06:19 PM   #1
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

JB+ 75% review

I was running JB+ at default setting for a while, decided to up it to 75% today...

Changing the boost is quite simple with the JB+, although it didn't occur to me at first that you had to adjust the little arrow, and not the entire blue dial. I was turning the blue dial like an idiot without it budging, not knowing you needed a small flathead screwdriver to adjust it.

Well, anyway, the car is scary fast now...there is a VERY noticeable difference from the default setting and 75% boost. The car just pulls like a madman...almost too quick for its own good sometimes.

Just one question though, whenever I am getting on it pretty hard, I hear this deep throaty "pop" from my exhaust. It almost sounds like a burp....I never noticed this before but of course I never really floored it before like this either. I should also note that this is NOT the gurgle you hear from letting off the gas (I am actively pressing the gas pedal and I hear it). Is this of concern>? BTW, I have the vacuum line for the butterfly valves unplugged (also known as golf-tee mod).
Appreciate 0
      04-10-2009, 06:49 PM   #2
RambleJ
Colonel
RambleJ's Avatar
No_Country
27
Rep
2,013
Posts

 
Drives: F10 535i M-sport
Join Date: Oct 2008
Location: Back in teh so cal

iTrader: (2)

Quote:
Originally Posted by TiAg335i View Post
I was running JB+ at default setting for a while, decided to up it to 75% today...

Changing the boost is quite simple with the JB+, although it didn't occur to me at first that you had to adjust the little arrow, and not the entire blue dial. I was turning the blue dial like an idiot without it budging, not knowing you needed a small flathead screwdriver to adjust it.
LOL! Glad to see im not the only person who did that!
Appreciate 0
      04-10-2009, 06:52 PM   #3
BoostedCosta
SUPERMAN
BoostedCosta's Avatar
44
Rep
3,171
Posts

 
Drives: AW e90 335i M-Sport
Join Date: Jul 2008
Location: nj

iTrader: (6)

Send a message via AIM to BoostedCosta
just put that thing at 100% already lol
__________________
MODS: JB3 18ohm | AR Design Catlles Downpipes | CDV Delete | Clutch Masters FX400 | ZEX Nitrous Kit | Devils Own Methonal Kit | VMR V701 (Matte Black) | H&r Race Springs| BMW Perf Grilles|
Appreciate 0
      04-10-2009, 07:05 PM   #4
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

Anybody have any opinions on the burping exhaust sound?
Appreciate 0
      04-10-2009, 07:21 PM   #5
cincy335i
Lieutenant
cincy335i's Avatar
9
Rep
418
Posts

 
Drives: '08 Black Saph 335i coupe 6mt
Join Date: Mar 2009
Location: Cincinnati, Ohio

iTrader: (0)

Turned mine up to 100% with the solenoid bypass. Have the UUC/Corsa Exhaust and when decelerating at certain points I can hear some popping noise from the exhaust, I don't think it is anything to worry about. Car is going on DynoJet again tomorrow so I will have some #'s to share soon.
Appreciate 0
      04-10-2009, 07:56 PM   #6
Diggy Diggy
First Lieutenant
Diggy Diggy's Avatar
8
Rep
341
Posts

 
Drives: 135i
Join Date: Mar 2009
Location: Kentucky

iTrader: (2)

Garage List
2008 BMW 135i  [0.00]
Is the 75% setting the "3'oclock" position?
Appreciate 0
      04-10-2009, 08:02 PM   #7
ragingclue
One cam is enough
ragingclue's Avatar
87
Rep
6,815
Posts

 
Drives: VF
Join Date: Oct 2008
Location: mulletville

iTrader: (1)

Quote:
Originally Posted by TiAg335i View Post
Anybody have any opinions on the burping exhaust sound?
If you're referring to what happens on the overrun, there's nothing to worry about there. That sound is tits, and won't hurt shit.

If that's not what you're referring to, I apologize for assuming it was.
Appreciate 0
      04-10-2009, 08:14 PM   #8
C63_BJ
Private First Class
Niger
2
Rep
110
Posts

 
Drives: 335i
Join Date: Dec 2008
Location: GTA

iTrader: (7)

Quote:
Originally Posted by TiAg335i View Post
I was running JB+ at default setting for a while, decided to up it to 75% today...

Changing the boost is quite simple with the JB+, although it didn't occur to me at first that you had to adjust the little arrow, and not the entire blue dial. I was turning the blue dial like an idiot without it budging, not knowing you needed a small flathead screwdriver to adjust it.

Well, anyway, the car is scary fast now...there is a VERY noticeable difference from the default setting and 75% boost. The car just pulls like a madman...almost too quick for its own good sometimes.

Just one question though, whenever I am getting on it pretty hard, I hear this deep throaty "pop" from my exhaust. It almost sounds like a burp....I never noticed this before but of course I never really floored it before like this either. I should also note that this is NOT the gurgle you hear from letting off the gas (I am actively pressing the gas pedal and I hear it). Is this of concern>? BTW, I have the vacuum line for the butterfly valves unplugged (also known as golf-tee mod).
EDit

Last edited by C63_BJ; 08-09-2010 at 06:39 PM.
Appreciate 0
      04-10-2009, 09:13 PM   #9
Fone Phreak
Private First Class
Fone Phreak's Avatar
United_States
4
Rep
156
Posts

 
Drives: 2010 135i
Join Date: Jan 2009
Location: MIAMI, NYC

iTrader: (1)

been at 100% for about a week or so. scary fast?? mmm.. lets just say its way more fun to drive! probably gonna put the JB+ on the 135 and invest in a JB3 or Proceede.
Appreciate 0
      04-10-2009, 09:21 PM   #10
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

Quote:
Originally Posted by ragingclue View Post
If you're referring to what happens on the overrun, there's nothing to worry about there. That sound is tits, and won't hurt shit.

If that's not what you're referring to, I apologize for assuming it was.
On the overrun? What is that?

This is NOT the sound you hear when you let off the gas in say, a parking garage, and hear the crackling/gurgling noise.

When I hit the gas hard I hear the exhaust "burp", it's pretty weird.
Appreciate 0
      04-10-2009, 10:06 PM   #11
Curt2000
Colonel
Curt2000's Avatar
United_States
70
Rep
2,566
Posts

 
Drives: '13 ///M3
Join Date: Jun 2007
Location: Sin City

iTrader: (24)

You mean to tell me there are people out there that run JB+ on less than 100%?
__________________

Current Car: '13 SANTORINI BLUE E92///M3--6MT/Speed Cloth/ZCP (ED Thread)
Former Cars:'10 E90 335i MSport / '07 Interlagos ///M5 / '09 135i / '10 E93 335i
Instagram: @C2KMotorsports
Appreciate 0
      04-10-2009, 10:17 PM   #12
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

Quote:
Originally Posted by Curt2000 View Post
You mean to tell me there are people out there that run JB+ on less than 100%?
Considering the potential for codes, yes.
Appreciate 0
      04-10-2009, 10:27 PM   #13
Curt2000
Colonel
Curt2000's Avatar
United_States
70
Rep
2,566
Posts

 
Drives: '13 ///M3
Join Date: Jun 2007
Location: Sin City

iTrader: (24)

3 questions about the JB+

Will it throw a code if you have a early 07 build with old software that has never been updated?

Hard ECU Reset?

Can a scanning tool not clear the code?
__________________

Current Car: '13 SANTORINI BLUE E92///M3--6MT/Speed Cloth/ZCP (ED Thread)
Former Cars:'10 E90 335i MSport / '07 Interlagos ///M5 / '09 135i / '10 E93 335i
Instagram: @C2KMotorsports
Appreciate 0
      04-10-2009, 11:06 PM   #14
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

Quote:
Originally Posted by Curt2000 View Post
3 questions about the JB+

Will it throw a code if you have a early 07 build with old software that has never been updated?

Hard ECU Reset?

Can a scanning tool not clear the code?
Early 07 build with the early software will most likely not throw codes. Keep in mind there is no way to guarantee any of this, and your best bet is to buy the BT tool. The BT tool will clear any code.
Appreciate 0
      04-11-2009, 07:45 AM   #15
TwinTurboXI
Major
40
Rep
1,390
Posts

 
Drives: 2011 135i
Join Date: Mar 2008
Location: Pittsburgh

iTrader: (9)

Quote:
Originally Posted by cincy335i View Post
Turned mine up to 100% with the solenoid bypass. Have the UUC/Corsa Exhaust and when decelerating at certain points I can hear some popping noise from the exhaust, I don't think it is anything to worry about. Car is going on DynoJet again tomorrow so I will have some #'s to share soon.
Do i need to do the bypass to safley turn the jb+ to 100%?
Appreciate 0
      04-11-2009, 08:10 AM   #16
Patrys@BimmerTech
BimmerPost Supporting Vendor
Patrys@BimmerTech's Avatar
Poland
87
Rep
1,610
Posts


 
Drives: 2007 E92 335i
Join Date: Feb 2009
Location: Warsaw/Poland

iTrader: (7)

Quote:
Originally Posted by TwinTurboXI View Post
Do i need to do the bypass to safley turn the jb+ to 100%?
That's what Terry suggests as well as the high octane fuel.
Appreciate 0
      04-11-2009, 09:38 AM   #17
cincy335i
Lieutenant
cincy335i's Avatar
9
Rep
418
Posts

 
Drives: '08 Black Saph 335i coupe 6mt
Join Date: Mar 2009
Location: Cincinnati, Ohio

iTrader: (0)

As far as turning up to 100% and doing the solenoid bypass, the answer to whether it is necessary is no, or that is what I was told. It just helps to increase low end torque as I think the ECU piggys' (V3 and JB3) both electronically bypass the solenoid? This is just a simple, free way to do it, the manual way. Not a necessary mod, but it is working out for me so far. Thanks.
Appreciate 0
      04-11-2009, 11:09 AM   #18
TwinTurboXI
Major
40
Rep
1,390
Posts

 
Drives: 2011 135i
Join Date: Mar 2008
Location: Pittsburgh

iTrader: (9)

Quote:
Originally Posted by cincy335i View Post
As far as turning up to 100% and doing the solenoid bypass, the answer to whether it is necessary is no, or that is what I was told. It just helps to increase low end torque as I think the ECU piggys' (V3 and JB3) both electronically bypass the solenoid? This is just a simple, free way to do it, the manual way. Not a necessary mod, but it is working out for me so far. Thanks.
Thanks Cincy, have you invested in a bt scan tool yet?
Appreciate 0
      04-11-2009, 11:55 AM   #19
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

Can someone confirm that the sound I am hearing is normal?
Appreciate 0
      04-11-2009, 12:40 PM   #20
TwinTurboXI
Major
40
Rep
1,390
Posts

 
Drives: 2011 135i
Join Date: Mar 2008
Location: Pittsburgh

iTrader: (9)

I have never heard a "pop" from my car. However, when letting off the gas pedal i do get a burble or small backfire, but thats been there since day 1
Appreciate 0
      04-11-2009, 02:05 PM   #21
TiAg335i
Trance Life
TiAg335i's Avatar
United_States
112
Rep
4,711
Posts

 
Drives: 2007 E92 335i
Join Date: Jan 2007
Location: Long Island, NY

iTrader: (4)

Quote:
Originally Posted by TwinTurboXI View Post
I have never heard a "pop" from my car. However, when letting off the gas pedal i do get a burble or small backfire, but thats been there since day 1
it's not a pop, it's more of a burp or gurgle when I get on it hard, NOT letting off the gas.
Appreciate 0
      04-11-2009, 07:23 PM   #22
mJ335
Amateur Post Whore
mJ335's Avatar
48
Rep
3,037
Posts

 
Drives: 07 E90 SparkLiN G. 335i
Join Date: Sep 2007
Location: SocaL

iTrader: (17)

Garage List
2007 e90 335i  [0.00]
I heard it too. Sounds like a small backfire. Mine was at 100% ever since day 1 (I think.. turning the dial clockwise to "Max".. right?).
__________________
Go WiTh ThE FLoW.

|BL|RS|PIAA|CFE|CFMC|SSM|CFG|CFDP|ABG|M6|AFE|MTECH |RPI|JB+|CSLT|KWSC|
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 -5. The time now is 01:43 AM.




e90post
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