i was thinking about doing a few engine upgrades, iv got a 93 import wrx, if i put on a set of 550cc injectors is that instant power or do i have to get a remap, i know i would have to get a welbro or similar. cheers

 

remap

 

now m8 u will need a remap plus put a new turbo on as well as u will be putting 2 much strang on your old one. i would all so oil change an plugs then car will be running sweet.

hope if help
andy