JB4 Settings and Launch Control

Agonz128 · 02-10-2022, 11:59 PM

When running map 1, what additional changes are you guys making to the boost levels (or anything else for that matter) to get better launches?

I have been unable to get a clean launch in the car in any format (stock or flashed) because it spins, then cuts off, then says AWD malfunction.

AngryInch · 02-11-2022, 12:05 AM

Better tires warmer weather, warm tires up driving.

Let off the brake sooner when flags come on. .

Agonz128 · 02-11-2022, 02:45 AM

295 and 305 wide MPS4S tires with under 1k miles on them. I live in Miami and this happens when it is in the 80s. I have properly set up for launching.

I guess I didn't make it clear... My question is extremely specific.

micvite · 02-11-2022, 06:06 AM

Quote:

Originally Posted by Agonz128

295 and 305 wide MPS4S tires with under 1k miles on them. I live in Miami and this happens when it is in the 80s. I have properly set up for launching.

I guess I didn't make it clear... My question is extremely specific.

Probably need a transfer case lol why not figure out what your codes are then come back and maybe we can help.

Agonz128 · 02-11-2022, 06:26 AM

Quote:

Originally Posted by micvite

Probably need a transfer case lol why not figure out what your codes are then come back and maybe we can help.

The code clears within 30 seconds on its own every time. I've tinkered with the rpm for the LC and it loses traction around 5k rpm in first gear, then throwing the temporary warning.

pbonsalb · 02-11-2022, 06:29 AM

Try asking Terry at BMS.

micvite · 02-11-2022, 05:29 PM

Quote:

Originally Posted by Agonz128

The code clears within 30 seconds on its own every time. I've tinkered with the rpm for the LC and it loses traction around 5k rpm in first gear, then throwing the temporary warning.

The car would still have a record of the code it doesn't just disappear lol. Go get it scanned with a proper bmw code reader idk if your jb4 can scan it or not but scan it when it shows up and see what the car didn't like

Boosted_8 · 02-12-2022, 11:15 AM

The JB4 does seem to upset the launch control programme a bit. My best 1/4 mile times are from brake boosting as a result. I'm yet to try boost by gear to take some of the gusto out of 1st and 2nd.

02-10-2022, 11:59 PM	#1
Agonz128 Private 16 Rep 91 Posts Drives: 2017 BMW M4 Join Date: Jan 2020 Location: Miami iTrader: (0)	JB4 Settings and Launch Control When running map 1, what additional changes are you guys making to the boost levels (or anything else for that matter) to get better launches? I have been unable to get a clean launch in the car in any format (stock or flashed) because it spins, then cuts off, then says AWD malfunction. Last edited by Agonz128; 02-11-2022 at 06:27 AM..
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02-11-2022, 12:05 AM	#2
AngryInch Lieutenant 213 Rep 548 Posts Drives: 2021 BMW M5 Comp Join Date: Jul 2021 Location: Canada iTrader: (0)	Better tires warmer weather, warm tires up driving. Let off the brake sooner when flags come on. .
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02-11-2022, 02:45 AM	#3
Agonz128 Private 16 Rep 91 Posts Drives: 2017 BMW M4 Join Date: Jan 2020 Location: Miami iTrader: (0)	295 and 305 wide MPS4S tires with under 1k miles on them. I live in Miami and this happens when it is in the 80s. I have properly set up for launching. I guess I didn't make it clear... My question is extremely specific.
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02-11-2022, 06:29 AM	#6
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Try asking Terry at BMS.
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02-12-2022, 11:15 AM	#8
Boosted_8 Captain 441 Rep 749 Posts Drives: M550i Join Date: Apr 2021 Location: UK iTrader: (0)	The JB4 does seem to upset the launch control programme a bit. My best 1/4 mile times are from brake boosting as a result. I'm yet to try boost by gear to take some of the gusto out of 1st and 2nd.
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