lim_fc3c

iTrader: (4)

Now that i have some cash to play with but not nearly enough (or ready) for a TII swap. I was wondering the compatibility of a Rtek 2.* S5 TII ecu to run a S5 N/A vert and N/A harness with of course snipping of the knock sensor wire.
I plan on using 550x2 injectors prior to ecu/rtek install. I want to get everything sorted out and "ready and safe" prior to the TII swap that is why im waiting and its my DD (also a noob at tuning...)

Im not too worried about the omp at the moment since it will be temporary until the TII swap. If i get a wild hair i will run the S4 cover/pump or EOMP controller if i have to (ive done lots of S5 reading). Ive heard about the S4 TII ecu in a S4 N/A to run temporary until a swap or something of that sort.. just want some S5 concrete on the subject. IF not i will go megasquirt + EOMP controller or S4cover/pump.

The main question here cliffnote style is...

S5 TII RTEK 2.* ECU + N/A S5 vert/harness = will it work? Thanks...

Vic

RotaryRocket88

iTrader: (7)

There's no issue getting a TII ECU (Rtek chipped or not) to work with an S5 NA harness. There are a couple minor changes to be made (see my sig. or the FAQ), but cutting the knock sensor wire is not one of them. That is for S4s only. The S5 ECUs integrate the knock box into the ECU itself, so you can just connect the new TII engine's knock sensor in to the appropriate wire.

If you leave 4x 550cc injectors in place initially, just be sure to leave the boost at stock levels (~ 8 psi). A higher flowing fuel pump should be upgrade #1 (FD pump works well), and larger injectors will give you some headroom if you turn the boost up.