hey guys i have a 97 b5 fwd and i upgraded the turbo to a t3/t4 (ebay) and i was wondering what is the highest psi i can put on my stock 1.8t ?? and what would be a good chip ? GIAC for $$520 dlls ?? is that a good deal ??

 

Read the sticky "new owner" posts in the B5 A4 forum and use the search feature - you'll find more info than you can read in a week. It's all out there, including the fact that to get the most out of that turbo you're gonna need injectors, a new DV, and a better intercooler.