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The picture above is from the RS4 so yes, the RS4 has a spider hose. The article number is 078 103 235 G.

You should take it up to about 15 psi. I had leaks that showed themselves first at around 12-13 psi. Mine also drops to about 5 psi in 15-20 seconds. I also have a fair amount of air coming out from the PCV breather (red circle in the picture). A common problem is leaks in the spider hose (yellow ci...

Mine was also leaking on the opposite site quite badly. The alignment was so bad that a new O-ring didn't help. I ended up using self-vulcanizing rubber and just wrapped a couple of turns around the pipe and pressed them together.

/Niclas

I did a pressure test the other day, and since the car has been running fine I didn't really expect to find any leaks. Boy, was I wrong! I found two leaks by the intercoolers which was quite easily fixed. I also found one at the left aluminum pressure pipe (going to the throttle body). This one was ...

Looks interesting. So these are actually bigger in volume than the ones from rs4intercoolers.co.uk.

I am also looking forward to see the measurements...

/Niclas

Anyone know how it is going for them and when the production is planning to start again?

I would be interested in buying a set.

/Niclas

Does anyone have the number on the Auxiliary belt tensioner?

/Niclas

And me too. I have also emailed but still no reply. I am also interested.

/Niclas

Are you sure about this? My service book clearly states every 30.000 km for the RS4. And so does the "Self Study Programme" file that you can download here on the site...

/Niclas

Let me try and shed some light over this with torque and power. To simplify things I am disregarding from air resistance and any losses in the gearbox and drive train over the revs. Acceleration is about getting maximum torque to the driving wheels. The gearbox is here acting as a torque converter b...