I owned a 2002 1.8t. Great car, but once I upgraded it, it wasn't reliable anymore. I had a 3071r turbo, built motor, etc... dropped about 20k in upgrades, and it ran 12's in the quarter mile and put down over 350whp.
Change the timing belt every 60k, run full synthetic oil and change it often they have sludge issues.
If its a CVT don't even chip it. Those transmissions are notoriously weak, they don't even hold up to the added torque of a chip sometimes.
As for the reliability issues on my car they were a result of the added power. I sold the car at 58k miles and was on my 3rd or 4th transmission(manual transmissions), bent all of my connecting rods(the weak link if you want to go above 300whp.) Keep in mind 350awhp equals about 455 hp, and the car came with 170hp. It just was never meant to have that kind of power, but I drove it like I stole it everyday.
If you ever have any questions I literally know everything there is to know about that car.
Damn man, you've got cash flowing everywhere right now :rofl: definitely pick up the 450hp Audi!
That e39 looks great! :thumbup: