They only show Stage 2. I believe you can fuel enough without port injection to break the car. I think you can still get 450-500 HP without port injection. They use to list Stage 3 without port injection.
450whp on pump gas. no meth. yes. but it’s pushing the limits of the stk fuel system.
400whp on pump gas. no problem. with the right setup.
my buddy with a hybrid made 390 whp and my buddy with an a3 made 450+ whp. both with completely stk fuel systems.
both of which are doing the precision mpi kit for this year.
if you want 400whp stk will do it. if you want 450+ whp it’s best to add mpi for reliability to the system.
Thanks for the info! I’m looking at hybrid turbos and 400whp looks to be a good goal for a street car on 93. I just wanted to make sure the fuel system was up to.
The stock fueling is good to about 400HP.
I'm above that now and having some fueling issues at the limit, my next mods are LPFP and MPI so that should solve that.
If you upgrade LPFP and MPI then you can easily support 500-750+ HP depending on upgrade, stage 4 can support 750+ check out http://www.precisionraceworks.com/index.php?route=product/category&path=20_61