Brake + Accelerator = Brake Only

[Kai]

Okay. So i dont know if any of you have noticed. It would be quite odd for someone normal to notice.

If you put the brake and accelerator on at the same time. Only the brake works. Pretty much the accelerator gets cut.

Is there anyway of disabling this? Does vagcom have that facility? It ****s me off!!!

[pomme]

I'm not sure it gets cut. The brakes will always out perform the engine, so yours never going to accelerate when braking and flooring in.

When i'm doing heel toe downshifts. the accelerator works fine *shrug*

Maybe i haven't tried what your trying.

[Kai]

Nah. Acclerator gets cut. Cause if you realease the brake after the computer cuts the accelerator. You just push the accelerator to the floor and nothing happens.

[SoVeReIgN]

Yep, its a 'feature' of all Bosch DBW ECUs.

Its funny in mine with the BOV - While at crusing speed/accelerating just tap the brakes and the BOV vents.

[Kai]

Can it be disabled?

[Timbo]

This relates to the ESP/TC elements of the ECU, as noted above. I understand there has been some code developed to disable this on certain models such as the R32 but I've not see n anything in relation to the Pog

[Guy_H]

Two ways of doing it 9we have done it both ways)

1: install a secondary brake light circuit with a switch - you can switch off the switch that leads to the ECU, and still retain the brake lights. As far as the computer is concerned - you are not using the brakes!

2: have the software recoded. Due to legal reasons, we have only done it for cars that are used for circuit racing, as obviously it stops the car doing what VW originally intended it to do in emergency braking.

2nd one is harder, we have to justif y enough cars "racing" to have it done.

[Kai]

Is it recorded when you recode it?

Can i just say that I use it for circut racing?

Cause... Cough. Recode Mine. Cough.

[Wand Weaver]

Two ways of doing it 9we have done it both ways)

1: install a secondary brake light circuit with a switch - you can switch off the switch that leads to the ECU, and still retain the brake lights. As far as the computer is concerned - you are not using the brakes!

I'd hate to think what that does with the ABS sensors though - if the ECU doesn't know you're using the brakes, wouldn't that disable the ABS too?

[Guy_H]

I'd hate to think what that does with the ABS sensors though - if the ECU doesn't know you're using the brakes, wouldn't that disable the ABS too?

ABS function is completely seperate to ECU function - that is also why its easy to change brakes / rotors without upsetting (electrically) the ABS.

When you think about it, VW & Audi are pretty much the only ones that disabel left foot braking - buy a Porche, BMW or Merc & they let you do it!