Are you running this combo?Reason I ask is that I came up with the same combo for my TTA and believe it will spool very nice and with the D5 make it as nice to drive as a stocker.
I had a stock D5 with a GT3255 w/RJC controller. Car did 1.79 60' on MT DRs. Best ET was 12.19@114 with 21lb and 18 degrees. If you have a stock motor you don't need a big turbo to go low 12s or high 11s.