That’s my favorite thing about the Race Chip option. No need for new plugs or catch cans, just the highest octane fuel you can afford.What i got back from Racechip Germany is they test & tune the cars to the fuel that is available in Germany. Which is 95 (91) Even their Racechip GTS which gives you another map & an extra 8hp & 20nm over the Racechip RS is done using 95 (91) on Std plugs.
****! I’ll STFU forever about gas prices.But I have been running 95 (91) since I got my car in May 2018 Price here is around $1.50lt. Which works out close to $5.62/gallon. So close to the US$4/gallon you have.
Going up to the 98 (95) fuel is normally around $1.75lt. Which brings it up to US$5/gallon