Originally posted by Soon2Bgreat
Well it's 98 RON they use. Sunoco has said their 94 is 99 RON. People have used 93 and been plenty fine. Some have also used 92 and been ok. If anything i'd save the money and use GTA fuel enhancer, turn down the boost, or just let the ecu do it's thing. In a stock setup the ecu will adapt.
The math works out to about the same 98 RON = ~93 of ours but a reflash isnt hard or expencive so why not? More then likely make more power after too...