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octane booster has actually been proved to lose you power....I think I've heard lowering the pressure in your tyres can help but make sure you can put it back up lol. Make sure your filters not clogged up / clean
I thought increasing the pressure helped? lol
that was with k03s revo stg2 according to logs the car was fine boost was spot on and maf figures good 172g/s. But i added some octane booster the night before and partly blame that or the fact of the dyno lottery.