upgrade because of the added cost of a new ECU. Even thou car has low miles it wasn't maintained properly and I would rather drop the cost in 60k than more performance. Also properly maintained it appears stock TT turbos last very long times at least that's what I've garnered from this site over the last couple of years
Tim Hartigan 1993 Superwhite TT (March 2000-November 2004) 41/2 years and 70,000 of some the best times of my life