Originally Posted by yarik123

my rear tires are not spinning when i drive but i lifted the car up and they work fine seems like there is a lose of connection does any one know what could be wrong? and where can i find the haldex fuse?

Originally Posted by cincyTT

The tt is primarily a fwd car. It only sends power to the rears when it needs to and even then it only sends 20% to the rear from factory. This can be changed by a hpa motorsports controller and send as much as 50% to the rears. The a4 quattro is a real awd system unlike the tt. So you can easily make it a fwd car by just disabiling the haldex unit but it does harm the trans if done often. Making it a rwd would require way more work and cost a pretty penny.

So for a dyno here and there you can make it a fwd car and then turn it right back to "awd" afterwards. I will repeat myself that this is not to be done often or for a long period of time.

And by the way if you remove the axles what are the wheels going to attach to?