I want to install a 4age Silver Top Engine into a 93 2 door starlet body & plan to go turbo in the near future. I realise that the silver top uses a AFM while the Black Top uses MAP sensor making the Black Top easier to go turbo on. Black Tops are expensive here so I need to know if can use the 4age Black Top 20 Valve ECU on the Silver Top Engine, In order to eliminate the AFM. Or is there another method I can use. Any help will be appreciated thanks.

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Hello guys im new to this thing but i would like some advice. between the 4age 18 and 20 vavle which is the better engine to have in a vehicle