BMW 3-Series (E90 E92) Forum - View Single Post

canderson · 12-17-2010, 05:08 PM

I suggest a separate chapter on traction control. Here is a description based on posts here

Procede traction/launch control (TC) is Spark Retard-based and does not adjust brake force or brake distribution. It drops engine torque through ignition advance adjustments when it detects power-induced wheel spin. The degree of TC intervention is dependent upon the severity/duration of the wheel spin event.

It is not a stability control system. It is just a way to help power get down to the ground when your gas pedal goes into the carpet. It will work with factory traction/stability control (DSC/DTC) on or off. It works independently of DSC/DTC. With TC on, the factory DSC/DTC will need to intervene less during acceleration. TC reacts faster than DSC/DTC and will recover faster when traction is restored.

You can turn it off/on depending on map, you can also dial in the sensitivity of the traction control (0-100%) depending on map. 100% disables TC and 0% is maximum TC. For non-xi/x-drive cars 30-50% is suggested.

For xi/x-drive cars it is suggested to leave this feature off (100%). There is no harm in a lower setting either since TC should rarely intervene.

Don't expect the Procede's TC system to manage wheel spin in snowy/icy conditions. It can only reduce engine output by maybe 150whp. So going from 400hp to ~250hp is still enough to spin the tires on snow/ice. The only way to stop wheel spin in such situations is through brake application (which the standard BMW DSC/DTC system does). So it's best if you leave DSC/DTC on and let the TC work in conjunction with it.

It is suggested to press the DTC button once so that the DME allows some degree of wheel spin before intervening. This works well with the Procede's TC. As does running with the factory system completely off (DTC button pressed and held for a few seconds). Of course, do this at your own discretion and only if you feel comfortable with it.

There will be a manual over-ride to disable the launch control feature for those times you need to do a burn-out (to be confirmed)

12-17-2010, 05:08 PM	#19
canderson Cogito Ergo Zoom 12 Rep 64 Posts Drives: 2013 BMW M3, 2016 BMW X1 Join Date: Jul 2009 Location: Scottsdale AZ iTrader: (1) Garage List 2008 335xi [10.00]	traction control I suggest a separate chapter on traction control. Here is a description based on posts here Procede traction/launch control (TC) is Spark Retard-based and does not adjust brake force or brake distribution. It drops engine torque through ignition advance adjustments when it detects power-induced wheel spin. The degree of TC intervention is dependent upon the severity/duration of the wheel spin event. It is not a stability control system. It is just a way to help power get down to the ground when your gas pedal goes into the carpet. It will work with factory traction/stability control (DSC/DTC) on or off. It works independently of DSC/DTC. With TC on, the factory DSC/DTC will need to intervene less during acceleration. TC reacts faster than DSC/DTC and will recover faster when traction is restored. You can turn it off/on depending on map, you can also dial in the sensitivity of the traction control (0-100%) depending on map. 100% disables TC and 0% is maximum TC. For non-xi/x-drive cars 30-50% is suggested. For xi/x-drive cars it is suggested to leave this feature off (100%). There is no harm in a lower setting either since TC should rarely intervene. Don't expect the Procede's TC system to manage wheel spin in snowy/icy conditions. It can only reduce engine output by maybe 150whp. So going from 400hp to ~250hp is still enough to spin the tires on snow/ice. The only way to stop wheel spin in such situations is through brake application (which the standard BMW DSC/DTC system does). So it's best if you leave DSC/DTC on and let the TC work in conjunction with it. It is suggested to press the DTC button once so that the DME allows some degree of wheel spin before intervening. This works well with the Procede's TC. As does running with the factory system completely off (DTC button pressed and held for a few seconds). Of course, do this at your own discretion and only if you feel comfortable with it. There will be a manual over-ride to disable the launch control feature for those times you need to do a burn-out (to be confirmed)
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