goint to turboin gmy 6-port and got a quick question...

What size are the stock secondaries on N/A S5?
I plan to go with 720cc secondaries once turbo'd. I am wondering if i can just take my N/A secondaries and use them as my turbo primaries...

 

460's

 

your N/A secondaries are the same size as your primaries, 460cc. ALL N/A's have 460cc injectors all around and ALL TurboII's have 550cc injectors all around.

Most people run the 550cc TurboII injectors as primaries and run 680cc 1st GSL-SE injectors as secondaries.

 

Would a set of the 460s work as primaires along with 780s or bigger for secondaries?

 

Are S4 NA injectors the same as S5? Basically could you use an S4 injector in an S5?

Thanks!

GG

 

Yes, but you would need to change a few things. Depending on year you may need to add a resistor. Also, you would need to change the clips on the wiring harness.