What kind of octane does my S4 n/a need. Yes....I have no idea, I've been using premium to be safe. But if I can get away with the cheap stuff... gas isn't cheap....lol don't hurt me...

NA? stock timing?



87 all the way baby.



and more on stock timing and it actually is slower, slower burning gas without the timing to make up for it.

Thanks! I know it was a simple question, but hey i'm new to the rotary game. https://www.nopistons.com/forums/pub...1047683473.gif