1. S

    WTB: Need o2 Sensor

    As the title states, looking for a functioning o2 sensor. I have an S15 with an S14 SR20DET, not sure if the o2 sensor is different on these or not. The Silvia failed an MOT for extremely high CO levels. Hoping it's just the sensor. If you've got one for sale, please PM me. Thanks.
  2. raytsang

    Engine knock

    I have a power fc in my car and it monitors knock levels. so was just wondering it it normal to get 2-4 levels of know when the car starts.. Also what is the safe level of knock for the engine. i get 36-40 levels of knock when i push the car hard just for a small bit. this seems high and...