Cant don't forget exactly what the B is, but TDC is Prime Lifeless CENTRE for for timing. All 20V's, no matter if within the Coastline or highveld ought to have a btdc of ten deg. That means your inventory timing should be established at ten. iirc the throttle opener is https://4age-20v-blacktop67765.losblogos.com/33691913/helping-the-others-realize-the-advantages-of-toyota-4age-engine-for-sale