XPtuning

This cleaner works pretty well! Before I use it. I renew the fuel filter first so dirt in here doesn't move further up into the fuel system. https://www.wynns.uk.com/product/xtreme-petrol-system-clean/

Which engine? The engine isn't on, but is the engine cold or does it make this noise when turned off while it's still hot after running it? My best guess now is the afterrun electric coolant pump...

The Audi A4 B7 has on each side those plastic covers, they will crack when a jack is placed there. The instruction booklet shows where the jack positions are at each corner.

Search on AliExpress for an Audi RNS-E replacement system...but mounting and connecting these Chinese systems requires some handy DIY-ing...

Of possible, move it to Audi A4 (B7) Forum. Thank you.

Hope this link to online ETKA helps 😄 Online etka https://ifinterface.com/prog/car/cp2/inprog.php Welcome >> Free services >> Carprog2

(oooops... I put it in the wrong topic 🫣...my apologies, admin please help.) Firstly my apologies for jumping in here with a question. I own a Seat Exeo ST and a couple of years ago I installed Audi S4 (B6/B7) front calipers with the 345mm rotor's. The stopping power is great but... I am from the Netherlands btw 😄 ... I also own a 1991 Audi 100 2.3e C4 ... with the great sounding 5 cylinder... At that time already noticed that these single piston partly aluminium and cast iron calipers are pretty heavy. My question is; does anyone know which Audi or Porsche, less heavy caliper is a direct bolt on replacement ? Thank you for any help or comment. This is the current setup: