MoTeC Global Forum

Hi all, used my c125 dash/logger for the 1st time at the track last week, checking through the data in my one run using nitrous, my fuel pressure reading seems way off, set at 6.5psi (using a 0 to 15psi sensor) the fogger is triggered through a micro switch that activates soon as I realise the trans brake.. soon as I release the trans brake the fuel pressure sky rockets to 16.2 psi? Pretty sure the reading is wrong.. the plate fuel psi in red is run of same pump.. could it be interference or something else going on?

It is too hard to comment without seeing your config.

You can duplicate you input pin to allow for measuring the raw voltage on your input pin



Otherwise depending on the wiring configuration of your sensors, something could be wrong there - leading to the AV going to maximum voltage when the button is pressed?

Thanks for the reply, the c125 is stand alone just used as a dash and logger,, not linked to the ignition system in any way, the only thing I could think that may have caused this is on release of the trans brake I have SPD2 input triggered on trans brake release to start logging, fogger fuel pressure is AV 6 so no real connection in any way..

NathanB wrote:It is too hard to comment without seeing your config.

You can duplicate you input pin to allow for measuring the raw voltage on your input pin

The attachment Duplicate channel.png is no longer available

Otherwise depending on the wiring configuration of your sensors, something could be wrong there - leading to the AV going to maximum voltage when the button is pressed?