Missing / Flatspot / Missfire after 4,000rpm ​​​​​​​

[UUUdirs2newcastle]

ok :S do you have knock sensors? its a aby right ?

It’s a genuine RS2 Avant buddy.

[fish]

Just take the o ring you have got to a well equipped hydraulics shop. Im sure they should be able to help you.

[UUUdirs2newcastle]

Well done!
There will probably be more leaks though

Now buy some vac tube and replace all the lines, either with Audi stuff with the braided cotton outer or good quality silicone stuff, with new clips.

Just replaced all the cotton braided 3.5mm vacuum hoses.

Also replaced the 2.7mm thick 70cm MTM pipe O-Ring on the cold side of the turbo.

[UUUdirs2newcastle]

The car still has that flat feeling/missfire above 4,000rpm when the throttle is wide open and when I kind expect the boost to start whizzing in, it’s fine with half throttle just gradually going up the revs All the way past 5,000rpm, so looks like it might be the Coil Packs overall. :-(

[Tractor Dave]

Have you cleaned your maf connector pins?

[newsh]

Have you checked how much boost you’re getting? It should boost up strongly between 3 and 4K

[UUUdirs2newcastle]

Car is fixed, it was either number 1 or number 3 coil pack. I bought another two (the last two BERU coil packs) from Euro Car Parts National stock, and changed #1 & #3, as I had already changed #2 last week. The car drives like a dream

[UUUdirs2newcastle]

Car is fixed, it was either number 1 or number 3 coil pack. I bought another two (the last two BERU coil packs) from Euro Car Parts National stock, and changed #1 & #3, as I had already changed #2 last week. The car drives like a dream !