Audi RS3 Stage1 99ron 105ron and E85 MRC Tuning

Stage1 Audi RS3 Daza all stock with MRC Tuning Map Switching on 99 ron 99 and octane booster and e85

[@SAAB95SPB]

What octane booster

[@YHsTig]

Hi Doug could you upload 2.5 golf swap videos please

[@dougatmrc]

ill re upload in the next week or so of one of them

[@markrs59]

Have you any experience with the new esso supreme99 fuel?? If so how do you rate it?? Thanks👍

[@dougatmrc]

We have seen 1 good car with it in and 4 cars performing poorly - i'd wait till they roll it out everywhere properly and get rid of old fuel

[@markrs59]

Think I'll stick with tesco 99 for now then, I had an astra vxr mapped few years back on it and had good results so stuck with it ever since with my cars but was curious to see if this was giving results

[@s-techtuning2764]

What octane booster?