BMW Variable TPS won't calibrate???
 

Hi All,

mk1 1995 Eunos/miata 1.6L 500cc injectors AFM delete with IAT, walbro 255
I have the BMW VPTS part no. 0 280 120 406

I have followed these instructions to install my VPTS: My Turbo Miata Photo Journal - Variable TPS

I have checked and re-checked the wiring and am getting no where now. I connected the ECU to tunerstudio but when I try to calibrate the sensor it just shows 0 voltage for closed and open throttle.

Am I missing something? Do I need to change a setting in tunerstudio to use the signal?

Any help would be brilliant!

Thanks,

Dan

Check the actual voltage from the TPS with the key on and engine off at closed and full throttle?

i remember something about that diagram being backwards or incorrect or something.

This guy had ground and 5VREF reversed:
https://www.miataturbo.net/megasquir...onfused-33024/

I missed the instruction about the jumper for the VPTS!

Put it in place and it works now.

Lush.