I use RON95 on the tuning. But, back to daily drive, I pumped RON 97.
Why?
- Running with duratec 272 cam, idling speed is smooth when burn with RON 97
( my idling speed is initially set at 1000~1100rpm on RON 95 in-order to gain stable idling + air con kick in. when pump in RON97, idling is...