Looking to get a B8.5 A4 2.0 TDI 175bhp and have it Remapped _- Superchips is indicating 210 BHP and 430 NM - this sounds pretty decent, when chipped are the 2.0 much much slower than a standard 3.0 TDI ?
I sealed mine up but in the end it kept failing, I got ****** off and got a modified tandem pump second hand off ebay from a 2009 A3 and fitted it - they have a modified fitting design that wont come loose.
I had the same ball ache with the air con , initially I spent a few hundred on a reconditioned compressor, this lasted two years and gave way - determined to have one more go i sourced a secondhand genuine compressor unit off ebay , re gas and its been fine ever since. I've spent the other...
Mines on 230K and still on the original clutch and its remapped lol....crazy isnt it they last so long - the best Audi quality before they started producing crap!!
Where about is your rust , is it structural or just the usual front wings / roof gutter type stuff?