Neutral Switch

[B0oStEr]

I swapped the 5speed from my r32 into my sons R32 auto.

We tested the neutral switch and found it didn't work at all.

I've been told you don't need it but someone said if the ecu thinks the car is in neutral it retards the timing to reduce emissions.

Does anyone know if this is true?

This might explain why my car was very doughy off boost.

[T04GTR]

yes thats true. it puts the engine into a state where it cycles the a/f ratio from 14-15 to 1 to get the cat converter working across its ful range.

with out it it sits at 14.7 to 1 at idle

nothing to wory about. it will just smell like new carpet