The STi's currently running the standard ECU, which from factory is tuned to run on 100ron fuel.
Unfortunately for us, the highest rating pump fuel we've got available is Shell's 98 octane V-Power fuel. So we've resulted in using Martini Racing Track Octane Booster to ensure the car's running at an optimum level.
To my surprise, I received a call from the advertising manager of the Impreza WRX Club informing me that I had won 25Lts of Martini Super Turbo 1400 Racing Fuel for participating at their Calder Park track day!
The Super Turbo 1400 Racing Fuel, diluted with normal 98ron, will see a boost in an octane up to 110ron!! However it will only be diluting enough litres per tank to bring the octane level to 100-102! Happy Days!!
A big Thank You to the Impreza WRX Club & Martini Racing for sponsoring the club sprint days!
Andrew