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
      05-31-2011, 05:49 AM   #1
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

JB4 Big Boost

I did a little modification on my JB4 board last night and upped the boost to possibly the peak of our Turbo's. Boost peaked at 18.5psi tapered down to 15psi. The car was running extremely strong. These boost levels are not really safe on pump fuel. Maybe more realistic when running meth. I wish I was running this boost last time I was on the dyno.
Attached Images
 
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      05-31-2011, 05:52 AM   #2
Jeef Beef
Lord Captain Commander
 
Jeef Beef's Avatar
 
Drives: a sleeper
Join Date: Oct 2009
Location: Sydney, Australia

Posts: 3,089
iTrader: (0)

18.5psi LOLWUT on 98RON and no meth? Smash in some 104 race gas, spray meth and crank it to 24psi
__________________

E82 135i M-sport: SGM/6MT/Black
Jeef Beef is offline   Australia
0
Reply With Quote
      05-31-2011, 07:29 AM   #3
Alpha Trion
First Lieutenant
 
Alpha Trion's Avatar
 
Drives: 135 Convertible
Join Date: Apr 2011
Location: Sydney Australia

Posts: 321
iTrader: (0)

so you would say it's safe to bump it up to 15psi all day on pump fuel and a tune?

what do we run standard (dont noob bash i just never thought about it before lol!)
Alpha Trion is offline   Australia
0
Reply With Quote
      05-31-2011, 07:34 AM   #4
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

Quote:
Originally Posted by blackonblack135 View Post
so you would say it's safe to bump it up to 15psi all day on pump fuel and a tune?

what do we run standard (dont noob bash i just never thought about it before lol!)
15psi if you have tune and supporting mods such as DP's and IC. Every tune and car is different.

Max Stock boost is about 8psi.

Do you have a tune?
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      05-31-2011, 05:12 PM   #5
Alpha Trion
First Lieutenant
 
Alpha Trion's Avatar
 
Drives: 135 Convertible
Join Date: Apr 2011
Location: Sydney Australia

Posts: 321
iTrader: (0)

No tune yet. Getting exhaust done this weekend (mid pipes cat delete) 2.5 inch each. Then I'll be looking for tune and someone Sydney local to do it!

Stock IC can't manage 15psi? I'd want to do as well that to get me safely to 15psi
Alpha Trion is offline   Australia
0
Reply With Quote
      05-31-2011, 05:24 PM   #6
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 15,980
iTrader: (1)

OP - Do you realize that there have been a few x35i engine failures running THAT much boost (18.5 psi). IF you look in the e90 forum you will find teh stick on the engine rebuild of the forum member who blew his engine when running that much boost.

I think I read that BMW only has provided maps in the DME for boost up to 14 psi.

I also think that only Giac has been able to program boost level higher than this 14 psi level. I think Giac has a "flash tune" that runs 16 psi or so.

IF I were you... I would be very worried when you are running that much boost on street pump gas. Esp since the juice box defeats the factory saftey features when you run the extra resistors to get up to 18 psi or more.


Dackel
Dackelone is online now   Germany
0
Reply With Quote
      05-31-2011, 05:48 PM   #7
WOPALX
Lieutenant Colonel
 
WOPALX's Avatar
 
Drives: 335i Sedan
Join Date: May 2007
Location: Sydney, Australia

Posts: 1,993
iTrader: (2)

Your quite right in some respects but GIAC isn't the only tune to run 15+ psi.

The N54 seams to be pretty bullet proof given the low number of failures, even when letting the factory ECU manage timing as the JB4 is designed to do.

There has been 2 known failures on the N54 with upped resistors on the JB4 in recent times.

Quote:
Originally Posted by Dackelone View Post
OP - Do you realize that there have been a few x35i engine failures running THAT much boost (18.5 psi). IF you look in the e90 forum you will find teh stick on the engine rebuild of the forum member who blew his engine when running that much boost.

I think I read that BMW only has provided maps in the DME for boost up to 14 psi.

I also think that only Giac has been able to program boost level higher than this 14 psi level. I think Giac has a "flash tune" that runs 16 psi or so.

IF I were you... I would be very worried when you are running that much boost on street pump gas. Esp since the juice box defeats the factory saftey features when you run the extra resistors to get up to 18 psi or more.


Dackel
__________________
Vishnu PROcede V5 | VK Motorworks FMIC | AR Design OCC | Forge DV's | Bilstein PSS9 | M3 Lower Control Arms & Caster Rods | Quaife LSD | HiTech Exhaust | BMW Performance Illuminated Door Sills | BMW Performance Gear Selector & Boot | BMW Performance E-Brake Cover
WOPALX is offline   Australia
0
Reply With Quote
      05-31-2011, 06:27 PM   #8
MrBlonde
Welcome! To the House of Batiatus!
 
MrBlonde's Avatar
 
Drives: 368 M Coupe, E82 135i, E70 X5
Join Date: Jan 2008
Location: Sydney

Posts: 2,660
iTrader: (0)

Send a message via MSN to MrBlonde
Quote:
Originally Posted by blackonblack135 View Post
so you would say it's safe to bump it up to 15psi all day on pump fuel and a tune?

what do we run standard (dont noob bash i just never thought about it before lol!)
No! I would not advise that!
__________________
.-=[ Kenny ]=-. 1999 BMW M Coupe 10.775 @ 134.35 mph w/1.600 60' (Best 136.07 mph) 25th August 2004. +2010 X5 35D+

Check out the 1Addicts Drag Racing Standings and Drag Racing 101.
MrBlonde is offline  
0
Reply With Quote
      05-31-2011, 07:20 PM   #9
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

Quote:
Originally Posted by blackonblack135 View Post
No tune yet. Getting exhaust done this weekend (mid pipes cat delete) 2.5 inch each. Then I'll be looking for tune and someone Sydney local to do it!

Stock IC can't manage 15psi? I'd want to do as well that to get me safely to 15psi
StocK IC needs to go.
Maybe I should have added race fuel to the mods for 15psi.
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      05-31-2011, 07:28 PM   #10
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

Quote:
Originally Posted by Dackelone View Post
OP - Do you realize that there have been a few x35i engine failures running THAT much boost (18.5 psi). IF you look in the e90 forum you will find teh stick on the engine rebuild of the forum member who blew his engine when running that much boost.

I think I read that BMW only has provided maps in the DME for boost up to 14 psi.

I also think that only Giac has been able to program boost level higher than this 14 psi level. I think Giac has a "flash tune" that runs 16 psi or so.

IF I were you... I would be very worried when you are running that much boost on street pump gas. Esp since the juice box defeats the factory saftey features when you run the extra resistors to get up to 18 psi or more.


Dackel
Thanks for insights Dackel. As I stated in the first post I am completely aware that this level of boost is pushing the safety limit on pump fuel. On a daily basis I don't push beyond 14psi.
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      05-31-2011, 07:30 PM   #11
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

Quote:
Originally Posted by WOPALX View Post
Your quite right in some respects but GIAC isn't the only tune to run 15+ psi.

The N54 seams to be pretty bullet proof given the low number of failures, even when letting the factory ECU manage timing as the JB4 is designed to do.

There has been 2 known failures on the N54 with upped resistors on the JB4 in recent times.
Agree the N54 is pretty bulletproof but the Turbo's are not.

CPS Offsetting
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      05-31-2011, 07:37 PM   #12
Alpha Trion
First Lieutenant
 
Alpha Trion's Avatar
 
Drives: 135 Convertible
Join Date: Apr 2011
Location: Sydney Australia

Posts: 321
iTrader: (0)

ok so,

mods that are required to run a max of 14psi which is what we are all saying is safe daily on pump fuel...

ICooler,

Downpipes,

Tune.
Alpha Trion is offline   Australia
0
Reply With Quote
      05-31-2011, 07:50 PM   #13
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

Quote:
Originally Posted by blackonblack135 View Post
ok so,

mods that are required to run a max of 14psi which is what we are all saying is safe daily on pump fuel...

ICooler,

Downpipes,

Tune.
Don't forget the intake or at the least a drop in K&N.
That sounds about right. However I use to run 14-14.5psi with just JB4, DCI and race fuel.
__________________
JB4

Last edited by JB4-335; 05-31-2011 at 08:07 PM.
JB4-335 is offline   Australia
0
Reply With Quote
      05-31-2011, 08:53 PM   #14
Jeef Beef
Lord Captain Commander
 
Jeef Beef's Avatar
 
Drives: a sleeper
Join Date: Oct 2009
Location: Sydney, Australia

Posts: 3,089
iTrader: (0)

Quote:
Originally Posted by blackonblack135 View Post
ok so,

mods that are required to run a max of 14psi which is what we are all saying is safe daily on pump fuel...

ICooler,

Downpipes,

Tune.
Not strictly necessary but always good to have. I don't have DPs or FMIC yet and autotune brings it to about 14psi. No codes or any real heating issues, even on the track.
__________________

E82 135i M-sport: SGM/6MT/Black
Jeef Beef is offline   Australia
0
Reply With Quote
      05-31-2011, 09:19 PM   #15
WOPALX
Lieutenant Colonel
 
WOPALX's Avatar
 
Drives: 335i Sedan
Join Date: May 2007
Location: Sydney, Australia

Posts: 1,993
iTrader: (2)

Quote:
Originally Posted by JB4135 View Post
Agree the N54 is pretty bulletproof but the Turbo's are not.

CPS Offsetting
Most of the issues seam to have related to piston #5 / #6 as a result of heat & detonation. There has also been a few reports of bearing failures on those pistons as well. Main area of turbo failure, and it's not really the turbo itself, is due to waste-gate rattle &/or seizure. Have not seen any reports I can recall of actual turbine failure on the n54 but I'm sure there would have been.

CPS offsetting is what the Procede does to allow it to influence timing, flashes if they are done properly adjust the actual timing maps on the ECU.
__________________
Vishnu PROcede V5 | VK Motorworks FMIC | AR Design OCC | Forge DV's | Bilstein PSS9 | M3 Lower Control Arms & Caster Rods | Quaife LSD | HiTech Exhaust | BMW Performance Illuminated Door Sills | BMW Performance Gear Selector & Boot | BMW Performance E-Brake Cover
WOPALX is offline   Australia
0
Reply With Quote
      05-31-2011, 09:23 PM   #16
WOPALX
Lieutenant Colonel
 
WOPALX's Avatar
 
Drives: 335i Sedan
Join Date: May 2007
Location: Sydney, Australia

Posts: 1,993
iTrader: (2)

Quote:
Originally Posted by blackonblack135 View Post
ok so,

mods that are required to run a max of 14psi which is what we are all saying is safe daily on pump fuel...

ICooler,

Downpipes,

Tune.
I've found running a daily 12psi map and a 14psi 'race' map has served me well.

FMIC, Exhaust and Tune. I did have a DCI (Injen) installed but removed it ages ago due to issues with the Highway Taxation Officials & the annoying induction noise.
__________________
Vishnu PROcede V5 | VK Motorworks FMIC | AR Design OCC | Forge DV's | Bilstein PSS9 | M3 Lower Control Arms & Caster Rods | Quaife LSD | HiTech Exhaust | BMW Performance Illuminated Door Sills | BMW Performance Gear Selector & Boot | BMW Performance E-Brake Cover
WOPALX is offline   Australia
0
Reply With Quote
      05-31-2011, 11:38 PM   #17
Alpha Trion
First Lieutenant
 
Alpha Trion's Avatar
 
Drives: 135 Convertible
Join Date: Apr 2011
Location: Sydney Australia

Posts: 321
iTrader: (0)

im still learning about the N54.. i'm so used to working on Jappers, Honda and Nissan especially i'm just hesitant when it comes to these cars.

thanks for the help guys

oh ps.. with the up in boost, is there a chance of spiking on a colder day? or does the computer limit the boost to max entered/ tuned for?
Alpha Trion is offline   Australia
0
Reply With Quote
      05-31-2011, 11:51 PM   #18
WOPALX
Lieutenant Colonel
 
WOPALX's Avatar
 
Drives: 335i Sedan
Join Date: May 2007
Location: Sydney, Australia

Posts: 1,993
iTrader: (2)

Depends on how your controlling the boost, other inputs your tune is reading and the safety systems your tune has.

Does not mean it does not happen, I got a couple of over boost codes recently after a HPFP replacement. I reset the WG adaptations and no more issues; even after a spirited drive to Jenolan on the weekend.


Quote:
Originally Posted by blackonblack135 View Post
im still learning about the N54.. i'm so used to working on Jappers, Honda and Nissan especially i'm just hesitant when it comes to these cars.

thanks for the help guys

oh ps.. with the up in boost, is there a chance of spiking on a colder day? or does the computer limit the boost to max entered/ tuned for?
__________________
Vishnu PROcede V5 | VK Motorworks FMIC | AR Design OCC | Forge DV's | Bilstein PSS9 | M3 Lower Control Arms & Caster Rods | Quaife LSD | HiTech Exhaust | BMW Performance Illuminated Door Sills | BMW Performance Gear Selector & Boot | BMW Performance E-Brake Cover
WOPALX is offline   Australia
0
Reply With Quote
      06-01-2011, 02:11 AM   #19
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

I have a before and after resistor swap log.
More boost and better managed wastegate duty.

http://www.ozbimmer.com/phpBB3/viewtopic.php?f=5&t=234
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      06-01-2011, 05:56 PM   #20
WOPALX
Lieutenant Colonel
 
WOPALX's Avatar
 
Drives: 335i Sedan
Join Date: May 2007
Location: Sydney, Australia

Posts: 1,993
iTrader: (2)

Quote:
Originally Posted by JB4135 View Post
I have a before and after resistor swap log.
More boost and better managed wastegate duty.

http://www.ozbimmer.com/phpBB3/viewtopic.php?f=5&t=234
Others have had the same in terms of solid logs post this mod. Then something goes wrong, there is no proactive control by the tune and the factory safety systems cannot react fast enough as they are being fed BS numbers in the case of a piggyback.

There are reasons why most generic tuners lock customers out of modifying their tune, generally it's because they don't want customers blowing motors and blaming the tune.
__________________
Vishnu PROcede V5 | VK Motorworks FMIC | AR Design OCC | Forge DV's | Bilstein PSS9 | M3 Lower Control Arms & Caster Rods | Quaife LSD | HiTech Exhaust | BMW Performance Illuminated Door Sills | BMW Performance Gear Selector & Boot | BMW Performance E-Brake Cover
WOPALX is offline   Australia
0
Reply With Quote
      06-01-2011, 07:10 PM   #21
JB4-335
Colonel
 
JB4-335's Avatar
 
Drives: E92 BSM & E91 BSM
Join Date: Feb 2011
Location: Australia

Posts: 2,540
iTrader: (1)

Quote:
Originally Posted by WOPALX View Post
Others have had the same in terms of solid logs post this mod. Then something goes wrong, there is no proactive control by the tune and the factory safety systems cannot react fast enough as they are being fed BS numbers in the case of a piggyback.

There are reasons why most generic tuners lock customers out of modifying their tune, generally it's because they don't want customers blowing motors and blaming the tune.
It's a personal option I guess and how hard you want to push your car. For most people they are happy running 13-14psi but I want more out of my car. I understand the safety aspect and it was you that said the N54 is almost bulletproof. I know my car can handle 15-15.5psi with my mods, cool temps and a resonable octane level to support. I know your a track guy but I don't track my car and on a daily basis I run autotune which see's around 13psi. Once I have meth and CPS I should be sweet to run about 16.5psi.
__________________
JB4
JB4-335 is offline   Australia
0
Reply With Quote
      10-03-2011, 07:28 PM   #22
BMWRX
Captain
 
BMWRX's Avatar
 
Drives: 135i TS
Join Date: Jul 2009
Location: Brisbane, Queensland

Posts: 948
iTrader: (0)

Garage List
I didn't want to start a new thread so thought I'd tack my question on here.

The new JB4 update has a feature that states "Added option 5/5 to wheel controls to automatically one push DTC on startup. Works on 135i and 335i models only. Not yet compatible with 535 and 335xi models."

What does this mean "one push DTC on startup?" Does this mean that the car automatically starts with DTC on rather than having to push the button to get it to activate like normal?
__________________
2009 BMW 135i - Titan Silver
2005 Subaru WRX Club Spec 8 - Crystal Grey Metallic - Fiddled with a bit - SOLD
BMWRX is offline   Australia
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 01:03 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