Ok Im gonna do the RTEK ECU mod for my TII so I can have bigger secondaries I just wanted to know after that mod do you still have to use the same type of injector meaning high/low impedence whatever they come stock with im at work and cant remember off the top of my head. I know some people have done this mod just wondering were they bought the injectors. RX7.com sell the injectors and resistor you would need for a stock setup but since you mod the ECU do you have to use the same impedence type, if that makes sense to anyone.

Ed

 

I'm in the middle of doing the same mods to my S5 TII. I bought the RC Engineering SH4-750D saturated injectors which are correct for this engine. Also got the Denso clip adapters to make the installation a bit easier. Check them out:
http://www.rceng.com/Saturated-Injec...top-P64C6.aspx

 

It's really very simple. S5s all use high impedance injectors (12-13 ohm), so if you want to use aftermarket low impedance injectors (2-3 ohm), you will need resistors in the 6-10 ohm / 10-20 watt range. All stock & modified ECUs need the same total resistance.