White911TTOne

Just wired m48 to 993 with 12 plug distributor and only one side of the engine is getting spark. I'm using factory harness with m48. Motec Ignition1 is wired to final stage ignition circuit 1 pin 25 and motec ingnition 2 (aux 2) is wired to final stage ignition 2 pin 35. Motec set up see pic.

Should I jump the two pins 25 and 35 together or can the motec be set where it triggers both coils at the same time? Thanks in advance Mark

FrenchToast

No clue. But, if you don't get an answer try posting in the 964 forum and user Geoffrey might see it. Or PM him directly. He is a MoTeC dealer IIRC.

NineMeister

You need to set the number of coils to 1 in the software, then wire ignition 1 to the trigger input on both sides of the ignition amplifier. The engine will then run both coils simultaneously.

White911TTOne

Thanks Colin, that's what I did last night and its firing on both sides. That's weird that motec is not capable of firing both outputs simultaneously

enjoytheride

Apologies for the thread hijack, but does OP or anyone else have the 88pin DME pinout they're willing to share?

I did find Bill Verberg's 55pin vs. 88pin pinout comparison, however there seem to be discrepancies with at least 2 pin names on his list (#20 & #78) and I'd like to have confidence in the 88pin pinout for my own engine management project...

MarinS4

shoot me an e-mail. I got something for you.

hogan.thomas@outlook.com

enjoytheride

Still on the lookout for the 88-pin ('96+ OBD II) DME ECU pinout.

0:-)

MarinS4

Try reaching out to Juha, He has done a 88 pin Motec install.

trophy

What are you trying to confirm?

White911TTOne

Has anyone wired the vehicle speed pin#9 55pin to motec input? What's the configuration in the m48 motec for "calibration" and "teeth #"?
I have the dig input 1 wired to vehicle speed pin#9 on the ecu connector. I'm assuming that signal is coming from the meg sensor from one of the wheels or ABS.
Thanks Mark

Juha G

Here you go:

trophy

#9 On the ECU actually comes from the Speedo, and from memory the speedo gets the signal via the Central Controller..

enjoytheride

I'm hoping to gain reasonable confidence in the true 88-pin DME pinout so I can adapt my standalone ECU to the factory wiring harness. Bill's diagram leaves some room for interpretation that I may be making incorrectly.

Thanks Juha, but that looks like the 55pin DME pinout, which is readily available and even comes up in a Google image search. I'm searching for the Eighty Eight pin pinout.

trophy

I found when I did my ViPec ecu in the car (55 pin) I actually verified the wires at each sensor and signal source. Even though I had the correct wiring diagrams. I have found that the descriptions in the diagrams sometimes don't make sense.

Are you building an adapter loom that plugs into the ECU and then into the stock harness plug?

trophy

Here is a partial Pinout for an 88pin ECU THis is for the Turbo, However they are the same for NA