I was two seconds away from installing my megasquirt and realized that the adapter I've got wired up is for a stock s4 harness. I own a series 5 t2.
So my question is:

Other than wiring the Ne- together with the G- for the CAS, what else is necessary besides resoldering the pins to their respective wires? What should I do with the TPS since it's got two instead of one? I checked the FAQ, there isn't a wiring chart for s5... only the s4.

Can anybody help a brother out?

 

I'd use the full-range TPS (the one thats actuated via the cam). I retrofitted it onto my S4 and its working very well. Also, you'll need to either find a way to keep the OMP pump running since it takes its signal from the S5 ecu, swap front covers to an S4 so you get the mechanical OMP, or run premix.

 

Thanks, I wired in the Full range TPS. So I think I have the adapter wired in correctly, the only question I have left is regarding what I did with the seven pin.

Per the FAQ's: the 7 pin is for the NE- signal from the CAS. however, using the wiring diagram given in the FAQ's the NE- signal is already connected with the G- (s5......ECu pin 3H?) by pin 3? or 1 or 2 or 4.... whatever, the VR signal. So since I'm re-wiring for an s5, I was left with a ground from pin 19... the harness ground. So I just tied it into an existing ground given from the harness, but what is that the way I should have done it?

 

IIRC I ran that ground in through an unused pin and connected it straight up to the grounding of the 2nd VR circuit, just to try to avoid as much noise as possible on it.