MembersPage/PeepPaadam/PorscheIgnition (2006-10-07 09:16:01)

Cylinder numbering and firing order are confirmed as correct. I would definitely write this down too. Don't expect anyone to review your setup without the basic information.

Fill in these - let's make this clear: you're most likely on your without this information

publish firmware info

Firing order : 1-3-7-2-6-5-4-8

UPDATE THIS TABLE !!!

cyl ignch EC36pin..
1 0 35
2 1 33
3 2 34
4 3 36
5 4 11
6 5 12
7 6 24
8 7 10

Without camsync, some trick is needed to drive COP (eg. ign_dualout).

The reasonable wiring is that ignch1 and 0 drive cylinders 360 crankdegree apart. ignch3 and 2 also, etc... That is:

With this, ign_dualout results in working "quasy-wasted-spark" setup. A full energy spark every 360 crankdeg (higher sparkplug wear). With a normal wasted spark setup, sparkgaps of opposite cyl are connected in series: the exhaust gases drop lower voltage and dissipate only 10% of the energy: so 90% goes to the cyl we want to ignite the mixture in.

Update I made the changes in wiring and configured ign-channels


All outputs are logiclevel (0 IGBT inside ECU). Logiclevel outputs pull to GND (0V) when inactive, so when you measure DC voltage with DVM, from 5V as base, you read -5V

Car runs ONLY on primary trigger which is stock 100-1 tooth wheel on the flywheel and I don't have cam sync. I fire COPs sequentially and car starts ok every time, but some cylinders don't work on low (below 1500) rpms.

I tried to fire COPs in pairs, as wasted spark, but it did not make any difference.

Note that I fired BMW m50 engine COPs also sequentially by using just stock 60-2 trigger wheel, same low-rpm problem.

The engine runs, but high dwell (3 .. 3.5 msec ?) was needed.

A: I measured all logic level ign outputs and nothing was connected at that time. Used DVM in usual DC mode and it read 1 volt on ign. event. As Marcell said, it's ok.