Noise interference

[adyw]

Gents,
I am having the odd issue with noise interference with my after market ECU fit,
Car suddenly doing 39000 rpm according to the log (if only) and ECU reseting

I have done about everything I have been recomended, re-earthed the car, Unplugged noise creating items, fitted suppressors and still having the odd issue.

So I am becoming desperate and need to find a fix,
Any suggestions would be welcome.
My initial thoughts are to try some of these,
http://ferrishield.com/html/ferrites/widebandcable...
but would I like a second opinion, waste of time and money.
or good idea ?
and some of this on the ECU itself
http://ferrishield.com/html/RFAbsorbers_PCBShields...

Thoughts gents.

[yellowgriff]

Try putting old ECU back in,If you still have it or lend one to try...At least this will pin point the problem.. GOLDIE

[adyw]

would love to except aftermarket one is way different to the original and uses a completly different loom.

[Pupp]

I'd prolly start with the cable to the VR sensor and make sure polarity is correct, and that the cable is shielded/routed as far away from noise sources as possible. If the polarity is reversed, will run but the signal is the wrong waveform and probably weak.

What ECU?

[cinquecento]

Hi ya..

In your MS, what is the normal running next pulse tolerance (Ingition setup). Mine is 25% and haven't played with that...not too sure if that setting would help

For EDIS, I assume that the noise must be on the PIP signal to see a large increase in RPM.. I have PIP/SAW using the same earth shield that is earthed at the EDIS end only. (on pin 7 of the Edis module).

Any chance the fans are spiking when they kick in??

[adyw]

I am using MS ECU, with edis 8, I have not played with the ignition setup so don't know about the 25%.
The trigger wheel wire is well away from anything noise recreating under the bonnet, however I do have the wiring running in a bunch of wires once through the gland into the car, which some of you may say is an obvious mistake and I will have a go at changing this first, apart from that I have run out of ideas.

If anybody can have a look at the datalogs I have recorded and can shed any other thoughts then just send me a email and I will send you a copy.