first ::: FA20A is coolest and best fuel mixed engine i saw it on my life

[ame="https://www.youtube.com/watch?v=zc8aUxBZlsU"]2013 Scion FR-S | D-4S Technology Explained - YouTube[/ame]
2nd ::: AFR should works with engine timing advance
3rd ::: rich AFR with increase(add + to timing )ETA means low power , heat up and bad fuel Eco*
4th ::: lean AFR with decrease (add - to timing ) ETA means boom , poping knocking and then engine died
5th ::: boosting it throws more HP
6th ::: MY OWN boosting Table AFR target and ETA target.