TPC SuperCharger

[tranceatlantic]

I got the wide band O2 sensor in today and wired it up to the control electronics. Everything seems to be working. I got a reading of 14.7 with the engine off. I'll know for sure when I see it heat up properly.

Next, I have to wire the SMT6 piggy back into the ECU wiring harness. Here, I ran into a problem. Although I have the Bentley manual which tells me which ECU pin does what what I dont have is the wire colour codes. Does anyone know where I might be able to find which coloured wire does what?

[The Radium King]

here's one for the 7.2 dme; uncertain how similar it is to the 5.x in your car:

http://www.pelicanparts.com/techarticles/Boxster_Tech/11-ENGINE-911_Engine_Swap/Electrical_Diagrams/Carrera01A.jpg

[tranceatlantic]

Thanks. The diagram in the link looked familiar so I check the back of my manual and the wire colours are there.

[pk2]

Not condoning this but since you can find the factory "workshop" manual with all the wiring diagrams on the all over the web, mys well. It shows all the pins and wire colors for the DME (and where they go to double check).

I think if you just only squint at the pertinent page then support your local Porsche dealer by purchasing a $3 cigarette lighter for $97, you'll be o.k.

PK

[tranceatlantic]

So now that I found that I have the DME wire colour codes I started looking at the DME functions more closely. Has anyone considered using the 'knocking yes/no' wire on pin 67 to wire up a knock indicator? Or am I misinterpreting what this is for? Sounds like a simple bulb to this would give you a warning.

There also a pin for oil temperature. Dose the non-S '99 986 have a oil temp sensor or is this what it would connect to if I had one? If its just the dial Im missing then Im going to want to start to plot that.

[pk2]

Originally Posted by tranceatlantic

So now that I found that I have the DME wire colour codes I started looking at the DME functions more closely. Has anyone considered using the 'knocking yes/no' wire on pin 67 to wire up a knock indicator? Or am I misinterpreting what this is for? Sounds like a simple bulb to this would give you a warning.

The knock sensor is imperative for this app and should be automatic. It' really just a tunned microphone, at the first hint of a knock it retards the timing, less power but no knock. A light might be nice but by the time you notice it a lot of damage may be done. A knock is detonation, very hot and at the wrong time. It will make your pistons in to swiss cheese. The stock system work well enough for the stock TPC setup. Up the boost and thats where you would need the SMT6 magic to retard timing further.

Originally Posted by tranceatlantic

There also a pin for oil temperature. Dose the non-S '99 986 have a oil temp sensor or is this what it would connect to if I had one? If its just the dial Im missing then Im going to want to start to plot that.

The dme is all 5v I believe. Put a voltmeter/DMM on it and run it for awhile. If it goes from say1.23v to 3.56v, its doing something. You can feed that signal right into your SMT6 software or get a gauge. You can also get an aftermarket guage & sensor.

Regards, PK