2010 2011 BMW 5 Series Forum F10 - View Single Post - F10 N63 Jb4 Beta Stage 3 Plus Bcm: Manual Shift Lag, Auto Shift Jolt, 5500 Rpm malfun

garyden550 · 03-17-2018, 08:39 AM

My car is a 2011 BMW 550i. I have the JB4 Stage 3+ BCM. I am running E30 fuel. I have burger intakes and AR design catless downpipes. I am having 3 different issues and so have attached 2 different logs which capture all 3 issues. One of the issues almost caused an accident with another automobile!!!

Btw...i am running map 7 for everything as it has the most boost (according to your website). If there is a map that will provide MORE power and im on the wrong one, please lemme know.

Issue 1 (log ending in "51_42"): When driving in automatic tranny mode with super sport mode "on", and traction control "off", for the first 3 or so gears, the car stops and then slams me forward and backward at gear change. If i didn't know better and know it was the tune , id say my transmission was sticking, stopping, and then suddenly releasing (its not...i tried this with jb4 off and everything is just fine).

Associated with this issue is the next issue (ISSUE 2). There is a noticeable lag beyond what's normal when shifting. When it shifts, i have to wait for what feels like 1-2 seconds for the shift to complete. Then, there is a post shift lag when i mash the accelerator pedal down.

ISSUE 3 (log ending in 32_20). When i am in 4th gear (and only 4th gear) and accelerating with wide open throttle, at around 5500 RPM, the car suddenly stops accelerating for anywhere from a few noticeable milliseconds to almost 1 second as if the gear just gave out and then, moments later resumes its acceleration. In the log, these are shorter malfunctions but noticeable. I ran it 3 times in a row starting from around 4000 RPM (2000 wasn't an option on the freeway). It malfunctioned 2 of the 3 times. Prior to my logging, i had gone to accelerate and change lanes on the freeway. As i went to change lanes in a tight situation, i was factoring in my acceleration and began to change while my tail was still parallel to the vehicle beside me. As i made the move, 4th gear malfunctioned and i nearly sideswiped the guy due to my stopped acceleration causing me to be unable to fully pull in front of him. Anyway, i referenced this earlier and figured id explain.

Any help please????

PS.... LOGS WON'T UPLOAD FROM MY PHONE. ILL LOAD THEM SEPARATELY FROM MY COMPUTER.

03-17-2018, 08:39 AM	#1
garyden550 New To Racing 0 Rep 1 Posts Drives: 2011 bmw 550i Join Date: Mar 2018 Location: Phoenix, AZ iTrader: (0)	F10 N63 Jb4 Beta Stage 3 Plus Bcm: Manual Shift Lag, Auto Shift Jolt, 5500 Rpm malfun My car is a 2011 BMW 550i. I have the JB4 Stage 3+ BCM. I am running E30 fuel. I have burger intakes and AR design catless downpipes. I am having 3 different issues and so have attached 2 different logs which capture all 3 issues. One of the issues almost caused an accident with another automobile!!! Btw...i am running map 7 for everything as it has the most boost (according to your website). If there is a map that will provide MORE power and im on the wrong one, please lemme know. Issue 1 (log ending in "51_42"): When driving in automatic tranny mode with super sport mode "on", and traction control "off", for the first 3 or so gears, the car stops and then slams me forward and backward at gear change. If i didn't know better and know it was the tune , id say my transmission was sticking, stopping, and then suddenly releasing (its not...i tried this with jb4 off and everything is just fine). Associated with this issue is the next issue (ISSUE 2). There is a noticeable lag beyond what's normal when shifting. When it shifts, i have to wait for what feels like 1-2 seconds for the shift to complete. Then, there is a post shift lag when i mash the accelerator pedal down. ISSUE 3 (log ending in 32_20). When i am in 4th gear (and only 4th gear) and accelerating with wide open throttle, at around 5500 RPM, the car suddenly stops accelerating for anywhere from a few noticeable milliseconds to almost 1 second as if the gear just gave out and then, moments later resumes its acceleration. In the log, these are shorter malfunctions but noticeable. I ran it 3 times in a row starting from around 4000 RPM (2000 wasn't an option on the freeway). It malfunctioned 2 of the 3 times. Prior to my logging, i had gone to accelerate and change lanes on the freeway. As i went to change lanes in a tight situation, i was factoring in my acceleration and began to change while my tail was still parallel to the vehicle beside me. As i made the move, 4th gear malfunctioned and i nearly sideswiped the guy due to my stopped acceleration causing me to be unable to fully pull in front of him. Anyway, i referenced this earlier and figured id explain. Any help please???? PS.... LOGS WON'T UPLOAD FROM MY PHONE. ILL LOAD THEM SEPARATELY FROM MY COMPUTER.
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