what is the cc difference between turbo II and gsl-se fuel injectors? and what is needed to swap them, procedure/parts?

 

TII Injectors 4x550cc
GSL-SE Injectors 2x680cc

 

Are you thinking about putting the turbo injectors in place of your se ones?rx7doctor

 

yeah, i heard that will increase fuel delivery. did i hear wrong? i'm thinking about a fuel system upgrade before i go supercharged this summer. any suggestions?

 

No it will decrease delivery and the car will run lean. The turbo injectors are smaller
therefore less fuel. The only way to change the sytem is to change the induction
system. IE; put a s4 complete induction /injection system. Either run the ecu from the turbo and harness or go standalone or mega squirt. the you could run the 550cc injectors as primary and the larger 680cc as secondary. And you would be running turbo or supercharger with these injectors. Otherwise with A N/a motor
and the stock s4 ecu you would run 4x460cc injectors. rx7doctor

 

The injector design changed between S4 and S5 from high impedance saturation to low impedance peak and hold. You can't mix and match them with a stock ECU. Although many aftermarked EMSs can handle either.

 

I thought S5 went to high impedance. That's probably what you meant.

 

Peak and hold are low impedance -> high current relative to saturation.