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have searched this all day and cant come up wit answer

have a S1 RB25, GReddy plenum and have purchased a Q45 TB for it, heres where im a little confused

so this is the Q45 with the TPS taken off

46249708-75BD-4E01-A76D-7D0218D9755F_zps

and this is the back of the standard Q45 TPS

145FCE68-68C3-4754-93B3-669DB4130BDD_zps

now going off all my googling the S1 RB25 TPS is suppose to be a bolt on affair, how the hell is that so

E2B7932A-4FD6-4E69-9FDD-87B331D06433_zps

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No, if you have a look at the two sides of the Q45 arrangement, the drive is not direct from the shaft, the drive occurs from that one ear hung off the throttle shaft pushing on the ear hung off the sensor's shaft. Both those shafts have either a single D flat or a double flat (to locate the ears properly, nothing else). But the RB TPS pictured uses keyways to locate on the throttle shaft. So, not compatible.

What you have there is a late model Q45 throttle body which shares the same TPS as the 1995+ R33 RB25DET engines. The throttle body can be modified to suit the butterfly drive mechanism is physically different. my suggest would be to see if anyone with a latter model engine is in the same position and help each other out.

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