hey , I have a 05 ss with 115km on er , I have gm stage 2 with an ottp 3" intake and a header and downpipe on way , looking to go zzp stage 3 with 80# injectors 2.9" pulley and dual pass with base s3 exchanger, what kind of difference would I be looking at performance wise ?

 

no point in 80# injectors for the rest of the mods, 60# will be plenty. the dual pass and s3 heat exchanger isnt going to improve performance in itself, however it lets you run a smaller pulley. a 2.9 isnt really a huge change, with the mods you are planning go with a 2.8.

 

use the search button this has been covered

 

nitrous

 

With all those mods, I would highly suggest upgrading your Flux Capacitor!!

 

Research.