someone did compund turbo on wira 1.5 4G15... dyno 2015 2.4bar 291hp... dyno 2018 2.7bar 447hp with original crankshaft
fb album
https://www.facebook.com/pg/Amadbing-Garage-269347363183025/photos/?tab=album&album_id=644271315690626
for 4G13/ 4G15 engine
google
Engine 4G1 Series pdf
4G1x Engine Manual.pdf
PWEE9001-A_ENGINE_4G1_SERIES_WORKSHOP_MANUAL.pdf
Mitsubishi Colt/Lancer workshop manual pdf
or join fb group
https://www.facebook.com/groups/4g1series/
to download pdf from...