I followed the wire loom from the ECU under the drivers seat to the left bott corner of the passenger seat behind the drivers seat. There is a large rubber grommet there that all the ECU wiring runs through. I pulled the OEM grommet out and replaced with larger due to the extra wires and vacuum line. Plus the new O2 sensor had its own bundle of wires that had to be run. Oh! And throw in one EGT sensor.
I felt I could get a good enough reading from one EGT sensor to help me tune car on Dyno. I ran controls for 2 6- coil packs also

 

Gus, where did you install the EGT? I need to get one installed and wonder best place.

 

I put one (1) EGT probe in the middle exhaust pipe on the drivers side ( easiest route to ECU ) and installed it about 4 inches from the head down the pipe. I drilled one hole and threaded it in and then used a stainless steel clamp to hold in place. Ran the cable up through the O2 sensor rubber grommet then through the ECU wring grommet and into the cab and to the ECU under the drivers seat.

 

Thanks Gus. My VEMS ECU has arrived. Will start a different thread to document the install with a TPC supercharger.

 

Make sure to tasks notes on all settings starting with the first configuration.
Save files often.
Make notes about all changes to each table and save changes.
Come up with your own system to track the progress and name for each new file.
Would be interested in your starting setting for the TPC to see how different settings are from my Varioramset up. One think that will affect is injector size- I am using 36 lb injectors. This imp T's pulse length and start settings.
Anyway good luck and great tuning

 

A small update, the VEMS was delivered a little while ago and I have everything I need except a couple of connectors to make up a loom for the o2 sensor and stub out the wasted spark ignition wires which to start with will be unused.

However I don't have a car, Nick is waiting for a seal for the gearbox (4wd solenoid) that's on backorder ... it's the rear one if anyone has one. It sprang a leak shortly after I dropped back to him and Nick can't really get his map sorted until he can drive the car.

So, it doesn't look like I'll be able to progress this in my week of holiday that I have booked next week which is frustrating.

 

Any news Alex?

 

Waiting for news from Nick who has had surgery on his shoulder in the last week or so.

 

So, any news Alex?

 

Hi Peep, i picked the car up 10 days ago after Nick had fixed the leaks and sorted the map on the motronic chip. It drove well for 100 miles home. But I tried to take it to the dyno on Thursday and it barely started and ran terribly, bogging and backfiring etc. Something is very wrong with the ignition timing it appears, not sure if it is mechanical or electrical. We did some basic diagnosis, everything looks connected and it runs poorly on either coil. So I now wait for Nick to come down and have a look take it way again.

 

An opportunity to convert to wasted spark me thinks. Ditch the clockwork

 

Alex, do you mean coil or distributor?

 

That was my next question. How easy is it to change from dist, to wasted spark system?

 

coil/distributor: same difference really. The two rotors are spinning in synch, aligned correctly and turn with the crank so that's mechanically OK and belt is intact. Both caps and rotors are intact. However the car doesn't run right on either coil or either distributor. I think we've ruled out the usual stuff: coils, disto belt, caps, rotors, HT leads - so either both coils blew up simultaneously or something else is wrong. The crank and hall sensors are both in place and connected - haven't scoped the signals. Also since it ran well before being parked up 10 days ago it's not going to simply be a case of the HT leads being miswired.

Wasted spark isn't hard, but doesn't work with the motronic and I want the car running right on the motronic (like it did before) before I get experimental in my garage with the new ECU.

 

Connect the VEMS into stock harness and you will see immediately which sensor is offline.