MembersPage/PorscheCarrera (2007-07-24 18:43:53)

Hi,

Car is 1994 Porsche 911 Carrera 2 (993).

It has air-cooled flat-six 3.6litre engine (11.3:1 CR) and it has supercharger installed. Originally 272 hp, SC should add around 130 hp.

ECU has Motronic 55pin connector and since the car has very low mileage (109 000 kms) and wires are in excellent condition, I'd like to installe PnP VEMS.

Car has twin-plug cylinder heads (total of 12 plugs) and two distributors. Plan is to eliminate these and use two Bosch 2x3 coil-packs. Firing order: 1-6-2-4-3-5

I'm aware of the wasted spark configuration in twin plug system.

Here's ECU pinout for that car: Porsche%20993%20Carrera2.JPG


Primary trigger is VR, 60-2 standard type. No surprises here.


Secondary trigger is HALL sensor in the distributor. Since wasted spark, not needed.


CLT is NTC type


IAT is NTC type


Injectors will be most likely 500-600cc (have to be changed, stock ones are too small) High-Z together with transient 30V diode.


IAC valve is PWM type, 2 wires, so driven from spare IGBT or INJFET won't bring up surprises.


TPS is variable.


Under ivenstigation:

I can add additional information about the car if needed, right now I don't now what to add more.