Sword_of_the_Spirit
Veteran Member
Hello All,
In VCDS, is it possible to remove signal to the Throttle Cut when brakes are engaged?
In VCDS, is it possible to remove signal to the Throttle Cut when brakes are engaged?
In VCDS, is it possible to remove signal to the Throttle Cut when brakes are engaged MK4 Golf (5spd ALH) and Mk5 Jetta (1.9pd 5spd) ?
- Thread starter Sword_of_the_Spirit
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jef@rosstech
Associate Ross-Tech Vendor , w/Business number
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That is a safety function baked into the firmware of the ECM, so I have my doubts it would be possible to do such a thing with a dealer level scan tool like VCDS.
Mozambiquer
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Thats the launch control. Its done with a tune.
Sword_of_the_Spirit
Veteran Member
Thanks for the reply guys.
Well, it may be similar, but I use it for heel/toe on decel.
Motion is the critical factor it seems. The ECU is triggering the safety.
too many times around a track and my habits have changed…..
Well, it may be similar, but I use it for heel/toe on decel.
Motion is the critical factor it seems. The ECU is triggering the safety.
too many times around a track and my habits have changed…..
The '80s Audi "unintended acceleration" scandal I think made VW very sensitive about detecting and stopping "pedal misapplication" situations. Hence their having programmed the cars this way (plus the elaborate shift interlock system on automatics that, unlike most makes, operates to protect shifts not only from park but also from neutral).
Unless I am mistaken though, it still should let you get away with a short blip of the throttle for heel and toe downshifts. Though I guess I'm not sure what year/model TDI you're driving, and if it's a newer car than what I have experience with, I may be wrong about that. But at least on all the cars I've had (PD and older, no newer CR era models that I can speak to on this), it'll let you rev the motor with a quick stab of the gas, even if you're on the brakes also. It only will intervene and shut down the throttle input after you have been holding both pedals down for more a second or two, when it figures you must be making a potentially fatal mistake.
Unless I am mistaken though, it still should let you get away with a short blip of the throttle for heel and toe downshifts. Though I guess I'm not sure what year/model TDI you're driving, and if it's a newer car than what I have experience with, I may be wrong about that. But at least on all the cars I've had (PD and older, no newer CR era models that I can speak to on this), it'll let you rev the motor with a quick stab of the gas, even if you're on the brakes also. It only will intervene and shut down the throttle input after you have been holding both pedals down for more a second or two, when it figures you must be making a potentially fatal mistake.
Vince Waldon
Top Post Dawg
Not within the power of VCDS, but a tuner can white out the "anti-heel-and-toe" bits. 
Nevada_TDI
Top Post Dawg
I understand how tuning in launch control would work while sitting still, if the vehicle is moving would launch control engage?
Nevada_TDI
Top Post Dawg
Will launch control "work" when the vehicle is moving?
Sword_of_the_Spirit
Veteran Member
Yes, there is a difference in timing the safety between an ALH and a BRM. ALH is nearly instantaneous (.5sec by my calculations), whereas the BRM can be negated (solid 2.5sec).
Launch control is an entirely different algo.
Motion is critical
Launch control is an entirely different algo.
Motion is critical