Go get Neetronics or someone comparable to tune it and don’t ever fill with anything less than 91. Not criticizing or trying to state the obvious or anything, but it’s good to learn from one’s mistakes. Sorry to hear about your shitty month though. :S
the guy is running used pistons - i dont think he wants to go to neetronics for tuning.
either invest in Aem FIC or atleast get a rom tune from Radek (original drift master ) - ive heard good things about him although i havent had any cars tuned by him.