MaxxECU trigger problems

[johanNN]

Hello,

I recently purchased the PNP MaxxECU street variant for my URS4. Before installing this the car was working flawless with the Motronic.
I've made no changes since (same flywheel & trigger wheel, no changes to HOME sensor etc). I'm using TFSI Coils.
The trigger system is the OEM audi 5 cylinder ones.

So now I've got my car running with the new ECU and on idle up until ~1900 RPM it runs completely fine, but when I go over that I get sync error and "trigger signal too late" error.

Anyone familiar with this problem? Or someone who can help me diagnose. (Oscilloscope is taken when problem occurs)

Thanks!!

[Error404]

Trigger arming threshold is set too high - you are missing some trigger events. Set arming threshold to approx 1/3 of average peak voltage. From your scope capture approx 1.5-1.8V

[johanNN]

Trigger arming threshold is set too high - you are missing some trigger events. Set arming threshold to approx 1/3 of average peak voltage. From your scope capture approx 1.5-1.8V

Thanks a lot!!!
I will try this first thing tomorrow

[Error404]

The sensor output voltage will increase with rpm, so your arming threshold should increase also. If you set it to approx 1/3 of average peak voltage at a few rpm sites it will work well.
To set it, take scope capture at a few rpm points, and you can set a curve for your arming threshold vs RPM.
You will probably have something like 0.4v and cranking speed up to 1.5v and 2k and maybe 3v at 6k something like that

[johanNN]

I understand! Thanks for explaining.
Here's a pic of my car!

[johanNN]

I did some more diagnostics and snapped some scope pictures of when I have a trigger error and identified the problem.
No idea what the solution is though.