E90Post
 


Coby Wheel
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Power lost while shifting gears. Help



Reply
 
Thread Tools Search this Thread
      05-02-2010, 10:17 PM   #23
a32guy
First Lieutenant
25
Rep
374
Posts

Drives: AW 335i
Join Date: Dec 2009
Location: CT

iTrader: (2)

My car loses alot of power between shifts too, just running standard map5 settings on 2.0 firmware.
__________________
Appreciate 0
      05-11-2010, 08:13 AM   #24
Jeff@TopGearSolutions
Jeff@TopGearSolutions's Avatar
United_States
3441
Rep
79,211
Posts

Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

iTrader: (37)

Quote:
Originally Posted by a32guy View Post
My car loses alot of power between shifts too, just running standard map5 settings on 2.0 firmware.
Again, you would need to mess with the settings in 2.0 to help this.

I got fed up with it personally.

I've talked to 5 Jb3 users in the past month, all of which I dont know personally, just met them.

First Question I asked:

Jb3 Yes
Manual Yes
Bog Yes

Its like the plague.
Appreciate 0
      05-11-2010, 08:16 AM   #25
Clap135
Brigadier General
Clap135's Avatar
102
Rep
3,460
Posts

Drives: 2009 N54
Join Date: Jul 2009
Location: Sticky's Mom House

iTrader: (1)

Typical jb3 MT car, shift like you are racing trying to win, and you will lose. I got a solution for you. Hint: you are on the right site. lol

Ive had this bog with the jb3 on 1.3, 1.4, and people on 2.0 are getting it. There are def more people who have it then who don't. And those who don't are not shifting fast, trust me on that. in conclusion, get a procede if you own a MT car.
Appreciate 0
      05-11-2010, 08:23 AM   #26
Jeff@TopGearSolutions
Jeff@TopGearSolutions's Avatar
United_States
3441
Rep
79,211
Posts

Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

iTrader: (37)

The problem is, people think its normal, like I said I talked to a bunch of people just in this short period of time and they all have it.

They just dont say anything.

A lot of people are complaisant with this kind of thing, or since they had since day 1 they feel its normal.

IDK what kind of car people drove before, but IDK how you can expect a car to not accelerate when you shift fast!

Only excuse I'll give is I can get my car to do it stock, but that dont make it right either.
Appreciate 0
      05-11-2010, 12:22 PM   #27
BrianMN
Banned
114
Rep
2,428
Posts

Drives: 4 Door Family Sedan
Join Date: Sep 2009
Location: Minneapolis

iTrader: (7)

I'm on JB3 2.0 with 6MT, just running the default maps, and I have never experienced something like this. The video looks like more than regular bogging...

You could try to play with Bogfix settings, but again, I've never bogged at all.
Appreciate 0
      05-11-2010, 12:28 PM   #28
Clap135
Brigadier General
Clap135's Avatar
102
Rep
3,460
Posts

Drives: 2009 N54
Join Date: Jul 2009
Location: Sticky's Mom House

iTrader: (1)

Quote:
Originally Posted by BrianMN View Post
I'm on JB3 2.0 with 6MT, just running the default maps, and I have never experienced something like this. The video looks like more than regular bogging...

You could try to play with Bogfix settings, but again, I've never bogged at all.
Shift harder on higher map.
Appreciate 0
      05-11-2010, 12:35 PM   #29
Mike@N54Tuning.com
Joint Chiefs of Staff
Canada
4918
Rep
115,980
Posts

Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

iTrader: (89)

Quote:
Originally Posted by BrianMN View Post
I'm on JB3 2.0 with 6MT, just running the default maps, and I have never experienced something like this. The video looks like more than regular bogging...

You could try to play with Bogfix settings, but again, I've never bogged at all.
Looked to me like the OP is just trying to cram too much boost for his octane running map 7 otherwise stock. Also no idea what software or settings he is running. I'm manual and have never had a bog either. But it's always a case of different strokes for different folks.

I get a lot of auto customers of other tunes coming my way because they are not happy with their shifting/boost taper. Doesn't mean everyone running an auto with another tune isn't happy but it's a common complaint I hear.

Mike
Appreciate 0
      05-11-2010, 02:10 PM   #30
Sniz
Lieutenant General
Sniz's Avatar
654
Rep
10,587
Posts

Drives: e92 335 - gone // e36 M3 turbo
Join Date: Mar 2007
Location: Ellicott City, MD

iTrader: (1)

I've never ridden in a JB3 manual car to feel the bog or no bog situation, but I was in a Procede RevII full stage III w meth last week, he was beating on it at redline and it just rocketed forwards at the shift, no bog at all. Felt great. Smooth and fast at 16.5psi.
__________________
Appreciate 0
      05-11-2010, 02:13 PM   #31
Clap135
Brigadier General
Clap135's Avatar
102
Rep
3,460
Posts

Drives: 2009 N54
Join Date: Jul 2009
Location: Sticky's Mom House

iTrader: (1)

Quote:
Originally Posted by Mike@N54Tuning.com View Post
Looked to me like the OP is just trying to cram too much boost for his octane running map 7 otherwise stock. Also no idea what software or settings he is running. I'm manual and have never had a bog either. But it's always a case of different strokes for different folks.

I get a lot of auto customers of other tunes coming my way because they are not happy with their shifting/boost taper. Doesn't mean everyone running an auto with another tune isn't happy but it's a common complaint I hear.

Mike

Its not a boost too high issue mike. themyst has horrible bogging, he switched to a procede and now run 17-18 psi shifting the hell out of it and he doesnt bog. anything map 7 and up he would bog. Terry is well aware of this by now as multiple people, including myself, have experienced this bog for years now.
Appreciate 0
      05-11-2010, 02:24 PM   #32
OpenFlash
United_States
1737
Rep
17,960
Posts

Drives: A Lot
Join Date: Sep 2006
Location: SF Bay, CA

iTrader: (0)

Garage List
Just ineffective tuning. There's really no other excuse for it. Fixing the bog issue is reasonably simple if the tune controls enough things and is capable of reading enough channels of data. This has been proven over and over again.

Shiv
Appreciate 0
      05-11-2010, 02:31 PM   #33
jcarlucci1
Lieutenant Colonel
63
Rep
1,642
Posts

Drives: Jet Black 335i
Join Date: Mar 2007
Location: Tampa

iTrader: (10)

Its really time to stop trying to cover up the issues with the shift bog on JB3 and just admit it. It is VERY apparent, happens on almost all maps, and almost everyone with a 6mt has it. I spent months tweaking every last thing in 2.0 trying to get rid of it and gave up. It really makes the car NO FUN to drive. Strangely enough, I replaced the JB3 with a JB+ and it no longer bogs.


Quote:
Originally Posted by Mike@N54Tuning.com View Post
Looked to me like the OP is just trying to cram too much boost for his octane running map 7 otherwise stock. Also no idea what software or settings he is running. I'm manual and have never had a bog either. But it's always a case of different strokes for different folks.

I get a lot of auto customers of other tunes coming my way because they are not happy with their shifting/boost taper. Doesn't mean everyone running an auto with another tune isn't happy but it's a common complaint I hear.

Mike
Appreciate 0
      05-11-2010, 02:53 PM   #34
OpenFlash
United_States
1737
Rep
17,960
Posts

Drives: A Lot
Join Date: Sep 2006
Location: SF Bay, CA

iTrader: (0)

Garage List
Quote:
Originally Posted by jcarlucci1 View Post
Its really time to stop trying to cover up the issues with the shift bog on JB3 and just admit it. It is VERY apparent, happens on almost all maps, and almost everyone with a 6mt has it. I spent months tweaking every last thing in 2.0 trying to get rid of it and gave up. It really makes the car NO FUN to drive. Strangely enough, I replaced the JB3 with a JB+ and it no longer bogs.
To be fair, the mechanism that causes throttle bog (pressure before TB>boost target when the throttle is slapped open) is still present with your jb+. The reason it is less pronounced is because the boost pressure at high rpm (6000+) is 4-5psi less than it wax with your jb3 which makes the overboost-at-shift condition less severe/likely. If you shifted a little quicker or at an RPM at which there was more boost, you'd see more evidence of the bog.

Until the jb3 offers either direct control of the wastegate solenoids AND the ability to read (and satisfy) DME boost target through CAN and (preferably) the ability to retard timing during the shift event, shift bog isn't going to be universally solved. All the marketing spin in the world isn't going to change reality.

Shiv
Appreciate 0
      05-11-2010, 03:01 PM   #35
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

Quote:
Originally Posted by Clap135 View Post
Its not a boost too high issue mike. themyst has horrible bogging, he switched to a procede and now run 17-18 psi shifting the hell out of it and he doesnt bog. anything map 7 and up he would bog. Terry is well aware of this by now as multiple people, including myself, have experienced this bog for years now.
Oddly, Map 8 would not bog, but Map 9+ would. Procede I don't bog anymore after the CANshift fix Shiv sent me and one other.
__________________
E90 LCI N54 6AT
Appreciate 0
      05-11-2010, 05:00 PM   #36
Jeff@TopGearSolutions
Jeff@TopGearSolutions's Avatar
United_States
3441
Rep
79,211
Posts

Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

iTrader: (37)

Quote:
Originally Posted by BrianMN View Post
I'm on JB3 2.0 with 6MT, just running the default maps, and I have never experienced something like this. The video looks like more than regular bogging...

You could try to play with Bogfix settings, but again, I've never bogged at all.
There is evidence that not all the cars will bog. That I will agree with however, A) your probably not pushing enough boost and/or B) not shifting fast enough is another reason.

Otherwise C) you have your fix dialed in perfect (rare).

Some people I talk to say the only get it sometimes.

I have videos from 1.3 and 1.4 software not showing evidence of bog.... yet on any random occasion it would.
It seems only when I needed to race it would bog, probably because my right arm was swinging that shifter faster then you can say Jb3.

Lot of things need to go right and only a small amount of things need to go wrong to create bog. We have a complicated car..... its needs a complex setup to tackle every aspect, despite what other people think. If its working for you, all the more power to you. My.02

I'm just curious how I can get my car to bog on a 2nd or 3rd gear downshift stock.... thats almost comical to me.

This car is really ghey. Oh and PS this video is the exact definition of bog.
Appreciate 0
      05-11-2010, 06:55 PM   #37
bgboost
Private
bgboost's Avatar
26
Rep
96
Posts

Drives: BMW M5
Join Date: Apr 2010
Location: bay area

iTrader: (3)

I just installed the Jb3 2.0 map 3 on my 6mt. DCI all stock otherwise. Powerwise it feels good for what I was expecting for Map 3.

While I don't experience the extreme bogging that the OP demonstrates, there is lag in between shifts. The harder and faster you drive/shift the more noticeable it becomes. With this much power, I'd expect to easily chirp tires at least between 1-2 shifts and even 2-3 however the delay doesn't allow me to.

i'll be testing out a procede car or tune on my own car to before making a switch. I'm still in my 14 day trial period.
Appreciate 0
      05-11-2010, 07:16 PM   #38
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

Quote:
Originally Posted by bgboost View Post
I just installed the Jb3 2.0 map 3 on my 6mt. DCI all stock otherwise. Powerwise it feels good for what I was expecting for Map 3.

While I don't experience the extreme bogging that the OP demonstrates, there is lag in between shifts. The harder and faster you drive/shift the more noticeable it becomes. With this much power, I'd expect to easily chirp tires at least between 1-2 shifts and even 2-3 however the delay doesn't allow me to.

i'll be testing out a procede car or tune on my own car to before making a switch. I'm still in my 14 day trial period.
Never bogged anything lower than Map 9. 1-2 shift is not a problem, at low boost levels, even the 2-3 isn't bad, its the 3-4 at that boost level that will cause problems. Dial in the bogfix first with a setting of 50 to start. Tweak up or down based on the logs.
__________________
E90 LCI N54 6AT
Appreciate 0
      05-11-2010, 08:32 PM   #39
Mike@N54Tuning.com
Joint Chiefs of Staff
Canada
4918
Rep
115,980
Posts

Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

iTrader: (89)

Quote:
Originally Posted by themyst View Post
Never bogged anything lower than Map 9. 1-2 shift is not a problem, at low boost levels, even the 2-3 isn't bad, its the 3-4 at that boost level that will cause problems. Dial in the bogfix first with a setting of 50 to start. Tweak up or down based on the logs.
With the latest firmware BMS rescaled it so a setting of 100 works best for most. It's much easier this way.

Mike
Appreciate 0
      05-11-2010, 08:35 PM   #40
Mike@N54Tuning.com
Joint Chiefs of Staff
Canada
4918
Rep
115,980
Posts

Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

iTrader: (89)

Quote:
Originally Posted by bgboost View Post
I just installed the Jb3 2.0 map 3 on my 6mt. DCI all stock otherwise. Powerwise it feels good for what I was expecting for Map 3.

While I don't experience the extreme bogging that the OP demonstrates, there is lag in between shifts. The harder and faster you drive/shift the more noticeable it becomes. With this much power, I'd expect to easily chirp tires at least between 1-2 shifts and even 2-3 however the delay doesn't allow me to.

i'll be testing out a procede car or tune on my own car to before making a switch. I'm still in my 14 day trial period.
The E93 is pretty heavy so I wouldn't expect a lot of gear chirping. But give it a try with bogfix = 100 on the latest 4/22 firmware. Bogfix is disabled by default. If you don't already have one grab a CDV also.

Mike
Appreciate 0
      05-11-2010, 10:04 PM   #41
BrianMN
Banned
114
Rep
2,428
Posts

Drives: 4 Door Family Sedan
Join Date: Sep 2009
Location: Minneapolis

iTrader: (7)

Trust me, I'm running enough boost
(Map 7) and I shift hard 1-2 the rear tires spin like crazy. 2-3 the tires spin a little bit, And 3-4 they chirp. There is zero bog, And I've never adjusted bogfix.



Quote:
Originally Posted by JPSlick View Post
There is evidence that not all the cars will bog. That I will agree with however, A) your probably not pushing enough boost and/or B) not shifting fast enough is another reason.

Otherwise C) you have your fix dialed in perfect (rare).

Some people I talk to say the only get it sometimes.

I have videos from 1.3 and 1.4 software not showing evidence of bog.... yet on any random occasion it would.
It seems only when I needed to race it would bog, probably because my right arm was swinging that shifter faster then you can say Jb3.

Lot of things need to go right and only a small amount of things need to go wrong to create bog. We have a complicated car..... its needs a complex setup to tackle every aspect, despite what other people think. If its working for you, all the more power to you. My.02

I'm just curious how I can get my car to bog on a 2nd or 3rd gear downshift stock.... thats almost comical to me.

This car is really ghey. Oh and PS this video is the exact definition of bog.
Appreciate 0
      05-11-2010, 10:09 PM   #42
BrianMN
Banned
114
Rep
2,428
Posts

Drives: 4 Door Family Sedan
Join Date: Sep 2009
Location: Minneapolis

iTrader: (7)

If you've tried adjusting the bogfix to 100% and its still doing That, that's another story
But I think a lot Oh people are complaining about bog without trying to adjust it first
Appreciate 0
      05-11-2010, 10:23 PM   #43
BrianMN
Banned
114
Rep
2,428
Posts

Drives: 4 Door Family Sedan
Join Date: Sep 2009
Location: Minneapolis

iTrader: (7)

If you've tried adjusting the bogfix to 100% and its still doing That, that's another story
But I think a lot Oh people are complaining about bog without trying to adjust it first
Appreciate 0
      05-11-2010, 10:24 PM   #44
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

Quote:
Originally Posted by Mike@N54Tuning.com View Post
With the latest firmware BMS rescaled it so a setting of 100 works best for most. It's much easier this way.

Mike
No, it makes it so the previous bogfix setting of 30 = 50, not quite a complete rescaling. Running excessive amounts of bogfix will mean poor boost recovery after the shift.

Change the taper setting to 50-62, bogfix to 50 on the latest firmware, tweak to your liking from there.
__________________
E90 LCI N54 6AT
Appreciate 0
Reply

Bookmarks


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 05:36 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