Blowoff or recirc? I tried putting a blowoff on mine so many years ago, but car always went to safe mode because it did not see the air that was blown off. So long ago that I don't remember exactly how it acted, but I had to turn off the car and turn it back on to get it to go to regular boost again.
2001 TT 225 blk/blk(13.6@98mph w/1.7 60') 3" CB with Flowmaster and H&R Coilovers < SOLD regret
1987 Audi 4000q < SOLD
1992 Passat Wagon aka: the draggin wagon < SOLD
1988 Audi 90 cammed < SOLD