EJ20 SWAP NO FURTHER A MYSTERY

The EJ20X and EJ20Y engines had an aluminium alloy cylinder head with cross-flow cooling, double overhead camshafts (DOHC) per cylinder bank and four valves for every cylinder which were actuated by roller rocker arms.Many of our members have had challenges with flat spots or glitches soon after implementing mods and updates or tuning, this isn't t