TOYOTA Celica GT4 trigger

[rob@vems.co.uk]

When you upload the firmware you'll see that the console reports that its erasing the flash.
To zap the config and tables you can make a tables file containing completely zeros.
If you really suspect the firmware then you might be as well to try one of the newer versions

[Wayne]

No i am not thinking, that it comes from the firmware, but i must try something,
because the time to the first event is not very long,
And when the first is running, i have to order and assemble another
two vems plus wiring for our rallye cars.

[rob@vems.co.uk]

You might be well placed to put these details on the Wiki - once its there I can press the developers to put more effort into solving your problem.  This forum isnt officially supported so its just down to us users to help each other out here, you've identified something outside of the scope I've ever seen before.

[Wayne]

My "testcar" is now running.

I changed firmware to 1.0.73 and remove every 12 tooth.
Now I am running 12-1 with no camsync, wasted spark and injectors are all fires at same time.

I checked dwell time with the oszi, and it works correct.

The car runs without any trigger errors.

[rob@vems.co.uk]

If you have a missing tooth then you can run sequential injection, it will be nicer.

Good to hear that it is working, I think with more time and filtering of the cam sync, you should be able to get a working signal.

If you are sticking with v1.0 then I would suggest that you use 1.0.78.
Using 1.1.6x will give you even more options.

[Wayne]

Ok,
i will try the sequential injection.
I use 1.0.73 because you nominate this firmware in an other tread.

You mean, that the problem with 24+1 trigger is the cam sync ?
The signal after the LM1815 was ok,
the only thing what i see, is it possible, that the position between the crank pulses could be the problem ?
Because on your trigger disk, the cam sync allways comes between two crank triggers and in my
case, the trigger comes in the first third between two crank pulses.

Which firmware i have to prefer, when i will stay on this trigger type (12-1) for a race car ?
I want to run, ALS, Lauchcontrol, perhaps water injection.

[rob@vems.co.uk]

Yes 1.0.73 is a good one to get an engine running on, but the newest firmware would be worth testing, you may have noticed that people are using it with VEMSTune and getting some positive results.

I say that it must be the cam sync because now that you have removed it the triggers work, but I guess that this may not be entirely the case.  Eitherway you have a trigger that appears to work now.