I know a lot of people pull the brake fuse in order to do a standstill burnout, but WHY does the ecu pull power when on the brake and the throttle at the same time?

The reason I am asking is because I talked to UpRev about the issue and want to be able to do a burnout without having to pull the fuse all the time. I am going to take my car there to see if they can make the ecu not pull the power when the brake and throttle are both engaged.

So, why does the ecu do this? Is it due to the electronic throttle control or something else? I need some direction to give to them because they have never been asked this question, insofacto, they have never tuned or flashed for this before. Thanks for any insight they you guys might have. I think it would be pretty cool if they could figure it out.

 

Manual or automatic?
Street tires or slicks?

 

AT5 I would think .

I hooked up a switch on my brake fuse so I can do burn outs with no problem . SOme one else has figured out what wires to tap into on the brake pedal to hook up a switch there also .

 

Ive got a manual. on both street and dr's

 

line lock FTW

 

pull the brake cover off under the hood. Look under there and the abs module is there. On the right side is the connector. Pull up on the little arm to unlock the connector. Pull back on the connector and slide it over. That will disable the abs, but you will have brake lights. It however will turn the brake light, abs, slip, tcs off light on the dash on.

 

1- take fuse out
2- stick 2 wires in ware the fuse go
3- attach one to a switch
4- atach the witch to the fuse with a piece of wire
5- atach the other wire to other end of fuse
6- mount switch anyware

WALLAH! u can turn rear brakes on and off!

 

^^^ Nice safety feature. ^^^

 

I do burnouts all the time without pulling a fuse.

 

I know this is an older thread already and all, but it sounds like the OP was asking WHY the car cuts power, not how to make it not do it.

So my answer to that would be, some aspect of the VDC, which senses that crazy difference between wheel speeds, and your applying the brake, but its not slowing the rear speed down, so it cuts throttle. I could very well be wrong, but it sounds good.

 

I always figured it was for the people you see in the newspaper that got confused and smashed through the front of a store becuase they thought they were in reverse when they pulled out of their front row parking space but the car was in drive. Who in the hell pulls out of a parking space in reverse with enough speed to crash through a brick building anyways?
I'm puzzled by what safety feature it provides myself. When I read your description it makes a lot of sense but the base model does this too and we do not have VDC!
For all the criticism that we get from most members here, burnouts are fun and with a car with decent enough engine power we should be able to easily smoke the rear tires at will, not do a bunch of special stuff and concentrate to get it just right. Seroius drag racers with slicks would just buy a line lock and do have a real need to do a short burnout. Sometimes blowing off some steam feels good though- doesn't always mean you are trying to show off or are immature. I'm surprised the OP didn't get flamed more. Maybe everyone passed this burnout thread over - there are dozens of them. The ABS trick is cool, I may actually try that one someday, but that would be as much work as locating the brake fuse

 

I dont see why the OP would get flamed for this question. He just wanted to know WHY it cut power. I would like to really know the technicality behind it as well.

 

+1, no need to pull the fuse IMO unless you're going for a burn out contest or doing some serious tire warming on the strip. My VDC has been disabled via the fuse

 

Yeah , I know. He even put the why in all CAPS. Still I'm surprised. Maybe people actually do read more than I think. At any rate it would take a reprogramming or defeating something related to why the computer does this like everybody is doing. There is probably only one input from the brake to the ECU and the program does the rest probably including lighting up the brake light. Although I'd have to see a wiring diagram. Wouldn't the brake light fuse be AFTER the ECU?? There is no need to fuse an input (the brake pedal).
I can only guess that it is anything between some insurance study that is trying to prevent idiot occurences to Nissan not wanting you to powerbrake the car and coming in for "warranty" work. I think all we will ever know is that we are stuck with it. If it is safety, does anyone have another car that has this wonderful, life-saving feature?