Cant remember what the B is, but TDC is TOP Lifeless CENTRE for for timing. All 20V's, no matter whether at the coast or highveld ought to have a btdc of 10 deg. That means your stock timing need to be set at 10. 03 toyota runx rsi spares have https://4age20vblacktopforsale36926.shotblogs.com/the-best-side-of-4a-ge-engine-for-sale-48550203