okay, for those who don't know, my car is an S5 that has the S5 ECU but an S4 powertrain (and a bunch of other things...):
https://www.rx7club.com/showthread.p...hreadid=303392

i think i will be aquiring a S5 BAC valve soon. my question is, how can i fit this on the S4 engine? currently the S4 BAC valve isn't even connected because the wiring harness won't fit with it. although it doesn't seem to be affecting anything, i would like to put the proper BACV if it isn't too much trouble...

 

anybody got ANY opinions?

i figure it's just a matter of bolting on the new BACV and swapping a few hoses here and there...