Turn your traction control into an electronic differential

[daithi ti]

Hi guys. Not much information out there about this so said id post it.

Hold down the tc button for approx 15sec. tc light on dash will then stay on until engine is turned off.

The tc will now distribute power between the rear wheels without cutting engine power.

Have fun drifting/diffing your 318ti!

[anassa]

can you explain? I thought tc was used in relation to the brakes and automatically applying it when it senses slippage? Its not wired or attached to the diff at all.

[spidertri]

It's not attached to diff or brakes. On the ti, when TC engages it cuts air to the engine. That is what the first throttle body in the intake path is. Remove that throttle body and you will remove the TC.

[anassa]

Originally Posted by spidertri

It's not attached to diff or brakes. On the ti, when TC engages it cuts air to the engine. That is what the first throttle body in the intake path is. Remove that throttle body and you will remove the TC.

ohhh ya duh. woops my bad. anyways point is it wouldn't work as far as i know.

[teen ti]

Originally Posted by anassa

can you explain? I thought tc was used in relation to the brakes and automatically applying it when it senses slippage? Its not wired or attached to the diff at all.

My E46's DSC system has something like that in addition to the traditional cutting air to the engine, so you're not too crazy

[anassa]

Originally Posted by teen ti

My E46's DSC system has something like that in addition to the traditional cutting air to the engine, so you're not too crazy

Thanks teenti, saved my ego a bit there

[Coyoteh]

Are you guys sure? The extra throttle body has been deleted on my car, but I still can definitely feel it doing something when it activates, i assumed it was the brakes.

[teen ti]

Originally Posted by Coyoteh

Are you guys sure? The extra throttle body has been deleted on my car, but I still can definitely feel it doing something when it activates, i assumed it was the brakes.

With ASC when only 1 wheel slips I think the brake might be applied to that wheel but when both wheels slip air to the engine is cut

[Coyoteh]

Originally Posted by teen ti

With ASC when only 1 wheel slips I think the brake might be applied to that wheel but when both wheels slip air to the engine is cut

Ah ok!

[spidertri]

Nevermind, I'm wrong. There's an article on this site explaining the system.

It says the first stage when 1 rear wheel slips is to pulse the brake on that corner. When both rear wheels slip engine power is reduced.

Honestly, I only ever experienced the reduced engine power. I deleted the throttle body and left the ASC controller so that way only the ACS light is on in the dash. If I unplug the ASC controller both the ASC and ABS lights will come on. The way it is now, ACS is always off and I'm running a e30 LSD.

[daithi ti]

this tc mode will distribute torque by breaking the wheel which is spinning faster but will not cut engine power with the secondary throttle body. acting like a locking differential

[Wulvndawg]

Is it possible my 95 318 Ti does not have TC?...if in fact it does, where is said button...

[teen ti]

ASC wasnt standard until 96 so you could very well not have it but if you did the button would be to the left of the wheel below the air vent

[Wulvndawg]

ha ha ...no TC for me to worry about then. Could be why the back wheels were chirping individually going around a bricked corner...bricked<--crosswalk was done in bricks...,closest i've come to drifting yet...lol

[zoner]

Originally Posted by spidertri

Honestly, I only ever experienced the reduced engine power.

Same here. And the first time it happened, being a seasoned driver and knowing how to react when a car breaks traction, it scared the crap outta me. Now, whenever I drive in circumstances that may engage the ASC+T, I usually disable it.