Looking for a specialist in the north east / North Yorkshire

[0770chris23]

Hi guys long time lurker here, I’m looking for a recommendation for a specialist for diagnostic and repair on my 2016 rs6 engine in the north east / North Yorkshire area ideally, it’s causing mayor headaches and most google searches bring up people down south if anyone can point me in the right direction it will be appreciated

Thanks Chris

[Tadass910]

Hello, what happened to your engine?

[0770chris23]

Hi I have what seems like a misfire on full throttle over 5k it’s had all sorts to try to sort it but just running out of patience now
It’s had spark plugs , coil packs , fuel pumps , pcv valve , injectors , swirl flap delete , downpipes with various tunes but I’m not getting a eml and apparently live data is fine and it’s making good power
I’ve ordered 2 new pre cat lambdas but not hopeful just need someone that has an idea and not just guess like the last garage have been doing