85rx12a

ive searched but could not find anything about using an n/a s4 ecu on the s4 Tii motor...ill this work? i cannot afford a stand alone ecu and i really dont want to have to program anything since this is really not my area (computers) and im not looking to make a gazillion horse power Tii FB just a stock Tii will work for me..

steve84GS TII

Im all for saving money,but trying to run a turbo engine with an N/A ECU is just dumb.
Why not just get a TII ECU to go with your TII engine.Its not like the S4 units are hard to find,getting one of Ebay should be easy enough.
The N/A ECU is set for smaller injectors than the TII,it wont recognize postive manifold pressure coming from the turbo,and it wont have any provisions for the knock sensor.

If your just talking about running a 4 port TII block without a turbo, with an N/A ECU,then that should work.They are basically the same engine,except for compression ratios and injector sizes.It wouldnt be ideal......a set of N/A rotors and injectors in a TII 4 port engine block with the N/A ECU, would be the correct match.

85rx12a

thanks for the help. I really didnt think it would work.

i only asked because i posted a WTB Tii s4 ecu and harness and i got a reply asking if i could use the N/A S4 ecu and harness, and didnt know if i could or not...

i hadnt thought of ebay.. ill go there now