Try use
1) Camshaft Jun Type 2 spec (intake: 304 degree, 11.5mm lift)
-stock camshaft spec is (intake: 300 degree, 10mm lift),
-upgrading camshaft is a MUST for the biggest HP gaining in NA route.
2) Injector 275cc from Eterna TT @ pajero iO.
-stock injector is 240cc (not...