not the boost sensor but the aps sensor next to the knockbox on the inner passenger side fender.
is this unit interchangeable between turbo models?etc (s4- s5)
ex
i have an 88 t2 i have the s4 boost pressure sensor. and s4 engine
however the sensor next to the knock box is n318. is this acceptable or do i need to swap out that sensor?

 

That sensor (like the knock control) is built into the ECU on S5s. The atmospheric pressure sensor is also the same on all S4s. N318 is the prefix for a lot of S4 TII parts.

 

thanks for the quick response . i just wondered if it was diffrent between turbo and na..

 

Same thing on S4 NA and S4 TII.