2G Innovate mtx dual oil pressure/temp gauge issue

[FIBA M - EC17PSE]

Might be in the wrong secion so please move if needed to,

I got my dual oil setup in and found the sender it came with was dead, so i bought a new one from someone else (not innovate) connected the wires and it reads weird! It idles at 100 and when hot still idles at 100??? But when i drive or rev it then it drops down to lower numbers! I tried to reverse the connectors and it jumps to 100 all the time so the way i have it works better but unsure why it idles at 100 though.

Any advice on this? Could it possibke be the settings in the gauge need setting up as i have yet to do this! I just assumed it was kinda plug and play thing.

2 pics, 100 is idle, and lower number is revving the engine.

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[Marchev]

I would start by purchasing an innovate sender. The off brand one you have might have different resistance values and throwing off the gauge's reading

 

[FIBA M - EC17PSE]

I did not think of that, i just assumed it was all the same, it has a pressure rating so it reads psi in psi reguardless but i guess it might be very very different then i had thought!

Im considering buying the new gauge version anyway now, it has a 150 psi sensor and a bit more refined so they say, they dropped the old senders and i guess for reasons.