Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Tue Dec 16, 2014 10:35 pm
The only difference between the CA swap and an SR swap is the knock sensor. On the SR, the knock sensor wiring goes through the main engine harness. The same is true for the KA. On the CA, for whatever wierd reason I don't understand, Nissan put the knock sensor wiring through the lower/transmission harness. This then connected to the body harness, and then connected to the engine harness. If you don't wire the knock sensor into the engine harness, the ECU sees that, and runs the conservative knock map.
The other option is to buy a brand new PnP harness from Wiring Specialties. This resolves this issue as their harness includes the knock sensor plug in the main engine harness.