Hello.

I need the part number for the a/f sensor, the one in the exhaust apparently, also I need a neutral position switch for a 5 speed 2001 wrx.

When on boost it starts going more crazy as boost builds, could this be retarding the timing by 2.5 degrees?

Thanks in advance!!!

 

have a look on this link
http://opposedforces.com/parts/
might find part numbers on it somewhere.

 

that popular auction site has NPS`s,
world car parts for the sensor.

 

Cheers for that, any thoughts on the nps retarding the timing?