Re:Zeitronix datalogging.. weird RPM spikes
 

Seems like i'm not alone with this problem.

I tapped mine at the ECU. It was working fine, but now i aslo got these spikes. Don't know what's up with it.

Re:Zeitronix datalogging.. weird RPM spikes
 

There should be one...

Re:Zeitronix datalogging.. weird RPM spikes
 

The rpm signal that I am using is off of the dizzy, it's the solid blue wire. The ecu doesn't have this wire going to it. I think that the ecu gets rpm from the other wires off the dizzy, mabye it has to calculate it or some ----. But the blue wire is there so that other sources can get the rpm (EX. tach, wideband). I am also getting the rpm spike though.

Where did you guys tap in at the ecu?

Re:Zeitronix datalogging.. weird RPM spikes
 

There is a Blue wire going to the Tach...that's the one you guys are using..
There is also a wire going to the ECU from the ignitor ... it's a white wire.....I traced it and it become green/white...it goes to several other sensors and then to C12 on the ECU......try that one out...it could be that one...
I yet have to install my WBo2

Re:Zeitronix datalogging.. weird RPM spikes
 

i have my SAFC tapped for RPM signal at the ECU. ill look at what pin it is and let you guys know!

or you could go to the APEXI.com website and use the pin they use for the old school afc. i beleive its on the last black plug....

Re:Zeitronix datalogging.. weird RPM spikes
 

here is the link

http://www.apexi-usa.com/productdocu...s_afc_gen1.pdf

here ya go

http://www.newbieforces.com/files/rpm SIGNAL.jpg

Re:Zeitronix datalogging.. weird RPM spikes
 

gracias, i will tap it tomorrow and see if it makes any difference.

Re:Zeitronix datalogging.. weird RPM spikes
 

let me know ur results.. if they are positives i will have to tap mine.

Re:Zeitronix datalogging.. weird RPM spikes
 

I looked at that pin out again, and that pin B5 that the apex diagram says to use, goes to the alternator..

Re:Zeitronix datalogging.. weird RPM spikes
 

Lol...I made a mistake..yes it's B15 on the second plug...I just traced the white wire coming from the ignitor unit to the ECU and it goes to B15 and B17...the white wire splits up in the middle and both B15 and B17 are are white.....you guess you can use either of them.