Reduced power when track launching

Whinodez · 02-05-2018, 10:11 AM

Does anyone know if coding out the engine power reduction to prevent brake disc overheating (flr) has an effect on being able to hold rpms with the brake engaged. When I attempt to launch, the rpms drop and kill my launch. It prevents any burnout as well.

Joe@TopGearSolutions · 02-05-2018, 03:31 PM

Quote:

Originally Posted by Whinodez

Does anyone know if coding out the engine power reduction to prevent brake disc overheating (flr) has an effect on being able to hold rpms with the brake engaged. When I attempt to launch, the rpms drop and kill my launch. It prevents any burnout as well.

Are you trying to use launch control on your 2008 335i? If so, I'm pretty sure it won't work since you don't have a DCT nor launch control.

Whinodez · 02-06-2018, 06:22 AM

No I don't have launch control, just holding the brakes and attempting to hold rpms

LMB335IS · 02-06-2018, 02:54 PM

Did you turn DTC all the way off (long press)? Are you in DS or Manual mode? If you can't hold it at 2k rpms by standing on the brake you have a transmission problem. There's no need to code off anything to brake boost these cars.

Levanime · 02-06-2018, 04:10 PM

code out ediff

Emilime75 · 02-06-2018, 09:44 PM

Quote:

Originally Posted by LMB335IS

Did you turn DTC all the way off (long press)? Are you in DS or Manual mode? If you can't hold it at 2k rpms by standing on the brake you have a transmission problem. There's no need to code off anything to brake boost these cars.

Agreed. My procedure is...
Manual mode, 2nd gear
DTC completely off(long press)
Left foot firmly on brakes
Right foot on throttle
Bring RPM up to about 1500-1800, adjust to taste
Release brakes
Feather in throttle
Hold on for dear life
Don't forget to shift.

HB E90 · 10-21-2018, 10:36 AM

Quote:

Originally Posted by Emilime75

Agreed. My procedure is...
Manual mode, 2nd gear
DTC completely off(long press)
Left foot firmly on brakes
Right foot on throttle
Bring RPM up to about 1500-1800, adjust to taste
Release brakes
Feather in throttle
Hold on for dear life
Don't forget to shift.

2nd gear launch? I'm afraid that would be too hard on the tranny / TC? I just got my ride which looks to be same as yours and I'm just trying to figure this stuff out. I do like the hold on for dear life. In first gear it does smoke the tires so yea maybe 2nd?

Emilime75 · 10-21-2018, 03:02 PM

2nd gear, yes. 1st is pretty much useless, I never use it, not for launches, or daily driving.

02-05-2018, 10:11 AM	#1
Whinodez New Member 5 Rep 29 Posts Drives: 2008 335i Join Date: Apr 2016 Location: New Jersey iTrader: (1)	Reduced power when track launching Does anyone know if coding out the engine power reduction to prevent brake disc overheating (flr) has an effect on being able to hold rpms with the brake engaged. When I attempt to launch, the rpms drop and kill my launch. It prevents any burnout as well. __________________ 2008 e90 335i, Jb4 G5, BMS chargepipe, Cobb dp's, Coolingmist meth injection, Dinan Koni yellow adj suspension, Eibach prokit springs
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02-06-2018, 06:22 AM	#3
Whinodez New Member 5 Rep 29 Posts Drives: 2008 335i Join Date: Apr 2016 Location: New Jersey iTrader: (1)	No I don't have launch control, just holding the brakes and attempting to hold rpms
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02-06-2018, 02:54 PM	#4
LMB335IS Sua Sponte 1297 Rep 2,848 Posts Drives: 2013 LMB 335is Join Date: May 2008 Location: FOB FL iTrader: (21) Garage List 2013 BMW 335is [8.84]	Did you turn DTC all the way off (long press)? Are you in DS or Manual mode? If you can't hold it at 2k rpms by standing on the brake you have a transmission problem. There's no need to code off anything to brake boost these cars. __________________ 335is/DCT-M3 GTS software-M3 drivetrain-M3 GWS-KOMBI-DSC-SZL/MHD/BQ Tuning IG@ClustersandCoding
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02-06-2018, 04:10 PM	#5
Levanime BimECU 193 Rep 759 Posts Drives: BMW Join Date: Dec 2014 Location: SD iTrader: (0) Garage List 2007 BMW 335 [0.00]	code out ediff
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10-21-2018, 03:02 PM	#8
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	2nd gear, yes. 1st is pretty much useless, I never use it, not for launches, or daily driving.
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