Boost Oscillation with JB4

Mautofied17 · 04-03-2013, 08:58 PM

So at any point I am accelerating or cruising with very light throttle, the RPM's will bump up and down and the car will sort of "lunge forward" in a pulsating pattern. It will do it manually accelerating or when the cruise is set on a flat surface. It is incredibly annoying. Does anybody have an answer to what may cause this?

Here's a video. There is a gear change somewhere in the video, but you can see the RPM's pulsating up and down by 100 RPM's or so.

brusk · 04-03-2013, 09:01 PM

I would start by getting some logs so everybody can see what's going on other than looking at a video of the tach bouncing.

Mautofied17 · 04-03-2013, 09:02 PM

Quote:

Originally Posted by brusk

I would start by getting some logs so everybody can see what's going on other than looking at a video of the tach bouncing.

I'm trying to find a laptop to use. I solely use Macs and they do not have a program optimized for the Mac.

dfjaws · 04-03-2013, 09:06 PM

I run parallels desktop on my mac to datalog. It works really well for me.

Mautofied17 · 04-04-2013, 02:28 AM

Quote:

Originally Posted by dfjaws

I run parallels desktop on my mac to datalog. It works really well for me.

Just downloaded Parallels, but having the hardest time trying to get Windows 8 up and running.

Mike@N54Tuning.com · 04-04-2013, 10:15 AM

Quote:

Originally Posted by SickStroke6.0

Just downloaded Parallels, but having the hardest time trying to get Windows 8 up and running.

Use XP... I am a mac guy and run the JB4 software on my macbook with XP using VM Fusion and XP.

Works great.

Mike

Mautofied17 · 04-04-2013, 10:40 AM

Quote:

Originally Posted by Mike@N54Tuning.com

Use XP... I am a mac guy and run the JB4 software on my macbook with XP using VM Fusion and XP.

Works great.

Mike

Finally got it running last night. I hope to have logs up by tomorrow sometime.

BEAR-AvHistory · 04-04-2013, 11:45 AM

If you had no lap top access the first thing you need to do is update the interface & firmware.

Randomaccess335 · 04-04-2013, 12:45 PM

Quote:

Originally Posted by SickStroke6.0

So at any point I am accelerating or cruising with very light throttle, the RPM's will bump up and down and the car will sort of "lunge forward" in a pulsating pattern. It will do it manually accelerating or when the cruise is set on a flat surface. It is incredibly annoying. Does anybody have an answer to what may cause this?

Here's a video. There is a gear change somewhere in the video, but you can see the RPM's pulsating up and down by 100 RPM's or so.

When I went from g4 to g5 I didn't set the interface to g5 iso in settings....... I had similar a problem.
Maybe this is ur problem.

Terry figured it out for me and all was good
Gl,
R

Mautofied17 · 04-04-2013, 02:37 PM

Quote:

Originally Posted by Randomaccess335

When I went from g4 to g5 I didn't set the interface to g5 iso in settings....... I had similar a problem.
Maybe this is ur problem.

Terry figured it out for me and all was good
Gl,
R

I'm not positive that the diodes are cut in order to run the ISO, but I will check it out.

Mautofied17 · 04-04-2013, 04:50 PM

Well found out the car actually has a G4 board. So I updated it and restored all defaults. Will report back if the issue is still prevalent.

ArweenX1 · 01-11-2018, 01:16 AM

Quote:

Originally Posted by SickStroke6.0

So at any point I am accelerating or cruising with very light throttle, the RPM's will bump up and down and the car will sort of "lunge forward" in a pulsating pattern. It will do it manually accelerating or when the cruise is set on a flat surface. It is incredibly annoying. Does anybody have an answer to what may cause this?

Here's a video. There is a gear change somewhere in the video, but you can see the RPM's pulsating up and down by 100 RPM's or so.

Ever fix this problem? Having the same issue

mike@x-ph.com · 01-15-2018, 05:29 PM

Quote:

Originally Posted by ArweenX1

Ever fix this problem? Having the same issue

He posted his fix, he had a G4 board and upgraded to G5.

ArweenX1 · 01-15-2018, 05:32 PM

Quote:

Originally Posted by mike@x-ph.com

Quote:

Originally Posted by ArweenX1

Ever fix this problem? Having the same issue

He posted his fix, he had a G4 board and upgraded to G5.

Having the same issue on G5 board

:

mike@x-ph.com · 01-15-2018, 05:33 PM

Quote:

Originally Posted by ArweenX1

Having the same issue on G5 board

:

Datalog and send it to Burger Tuning

04-03-2013, 08:58 PM	#1
Mautofied17 First Lieutenant 100 Rep 305 Posts Drives: 2024 M3 Competition xDrive Join Date: Jan 2013 Location: Alabama iTrader: (0)	Boost Oscillation with JB4 So at any point I am accelerating or cruising with very light throttle, the RPM's will bump up and down and the car will sort of "lunge forward" in a pulsating pattern. It will do it manually accelerating or when the cruise is set on a flat surface. It is incredibly annoying. Does anybody have an answer to what may cause this? Here's a video. There is a gear change somewhere in the video, but you can see the RPM's pulsating up and down by 100 RPM's or so. __________________ Blake - 2024 M3 Competition xDrive Square 826M 20" Wheels, Dinan HAS, Dinan Midpipe, Dinan Axle-Back Exhaust, Dinan 10/12mm Spacers, SST Valve Controller
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04-03-2013, 09:01 PM	#2
brusk Lieutenant 33 Rep 578 Posts Drives: 2008 135i Coupe Join Date: Jan 2012 Location: Cleveland, TN iTrader: (1)	I would start by getting some logs so everybody can see what's going on other than looking at a video of the tach bouncing. __________________ 2008 135i - MHD/JB4, MS DP's, AMS IC, UI CAI, CDV delete, M3 control arms/Links, RE Toe Link, ECS Trailing Arm, M3 rear SF & Trans bushings, SS brake lines, Michelin PSS.
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04-03-2013, 09:06 PM	#4
dfjaws Lieutenant 57 Rep 535 Posts Drives: E90 M3 / E86 M Coupe Join Date: Sep 2011 Location: Des Moines, IA iTrader: (5)	I run parallels desktop on my mac to datalog. It works really well for me. __________________
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04-04-2013, 11:45 AM	#8
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3127 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	If you had no lap top access the first thing you need to do is update the interface & firmware. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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04-04-2013, 04:50 PM	#11
Mautofied17 First Lieutenant 100 Rep 305 Posts Drives: 2024 M3 Competition xDrive Join Date: Jan 2013 Location: Alabama iTrader: (0)	Well found out the car actually has a G4 board. So I updated it and restored all defaults. Will report back if the issue is still prevalent. __________________ Blake - 2024 M3 Competition xDrive Square 826M 20" Wheels, Dinan HAS, Dinan Midpipe, Dinan Axle-Back Exhaust, Dinan 10/12mm Spacers, SST Valve Controller
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