I have an S4 block w/ S5 intake manifolds, so do I run an S5 TPS or an S4 TPS?

 

the question really should be is your car and ECU an S4 or S5?
if you have an S4 ECU, you have to run the S4 TPS.

 

Not sure about the ECU, is there an easy way to tell the difference between the 2

 

http://www.rotaryresurrection.com/2n...lications.html

Which number do you have?

 

The pressure sensor has N350 written on it. Do you think i should go to the trouble of pulling up the carpet to to read the ecu, or should i trust that?

 

I think you should put the S5 intake on the car. It's a series five car/ECU and most important, a series five OMP if you changed the front cover as you NEED to do so the OMP works. If the series five OMP does not function/is not SEEN by the series five ECU, then the ECU goes into LIMP mode. Meaning it won't run worth a darn.

So, put the S5 front cover on with the series five OMP. Install the series five intake manifold ...complete.

 

It has the S5 intake also.