I've been struggling with trigger issues for a few months now.
I'm using a 60-2 trigger setup with a single tooth cam signal.
I can't get the single tooth cam to work because of noise.
Here are some oscilloscope measurements that will tell everything: This is the CAM signal Also CAM signal
Now here it gets interesting. This is the 5v signal inside the Speeduino: As can seen here this signal is also very noisy.
And here is the 12v signal coming into the ECU: My question is:
Is this not normal for a battery power supply on a running engine?
If not, this may also solve a mystery because I have broken two AEM 30-0300 widebands in my car (under warranty) that all failed differently. Maybe those widebands broke because of the voltage spikes/drops.
When I disconnect power of two ignition coils it looks like the noise gets less. When I disconnect power from all 4 ignition coils with the engine running at around 3k the noise immediately disappears.
I'm running these coils which are LS6 D585 knockoffs (herko B045HE):
https://www.ebay.nl/itm/Set-of-4-Herko- ... 3090305476
So my questions:
- Is this normal on a 12v power line?
- If not, should I blame the coils or am I missing something like capacitors at the coils?