01-27-2012, 05:29 PM
Join Date: May 2011
Total Cats: 12
Hey guys im finally in the ms club, its installed and almost ready. but i was finishing installation on the bmw vtps and checking calibration, its reading 200s at closed throttle and and 30s at WOT. its in flood clear mode at closed throttle what did i screw up. i used this guide
You will need to source a linear TPS from the aftermarket or from another application. The easiest swap is probably a BMW TPS Bosch part # 0-280-120-402 from an auto E30 or E36, or Bosch #0-280-120-406 from an E32. Both of these should bolt on your miata TB w/o modification. You will need to adapt the wiring harness to accomodate.
The BMW pinout is:
Pin 1-black wire-5volt in
Pin 2-shielded wire-ground
Pin 3-yellow wire-signal out
Pin 5-WOT switch
Pin 6-Closed switch
5 T 2
Depending on your harness, you'd want:
Pin 4 or 2* to go to the black/grn wire - this is a ground. * Not sure which you need to use.
Pin 1 to go to your R wire - this goes back to 1N on the ECU harness and should connect to 5vref from the MS.
Pin 5 to go to your LG/WHt wire - this goes back to 2L on your ECU harness and should connect to the TPS input to the MS.