rb25 q45 s2 question
 

why cant we use the throttle body throttle position sensor off of the s2 on the q45?!?!?!?! they both fit the same flange type on the tps input shaft. i think peoples assumptions are incorrect because i put them on right in front of me.

Possibly differnet Voltage signals.

Check the Voltage Signal comming from the Stock TB and Compare it to the Q45 TB

ill try that out. i just didnt know why they werent interchangable because one tps sensor does fit on the other shaft of the q45. mines s2 also

The keyway part is different. At least mine was.