Absolutley...only use super unleaded in my P4SS.
In my previous 4/4 Sigma engine after having the ECU remapped by Cain of Wolf Performance the engine used to "pink" on normal unleaded but this was cured by using super unleaded.
It also made a noticeable difference pre remapping on acceleration and drivability.
So yes ...your favourite car will thank you for using the best !!!
