I have a 91 TSi AWD and I wouldnt say that they have a lot of problems, actually less than most cars I have driven, or known of. Mine has 192000 on it with the original trans,engine,turbo,x-fer case, and rear.. The only things I have replaced are axels from cv boots tearing and the joints going dry, and brakes, and the occasional timing and balance shaft belt. Only now at 192k is the stock turbo starting to croak, and since I have owned it it has never seen less that 17 psi, right now my controller is set at 21.. Heck the thing even ran 13.4 with only some 112, removed exhaust after the down pipe, and the boost at 16 psi, thats not bad in my book.. As for the spyder with your mods youll have no problem putting a hurting on him..:SNSign: