Octane Booster

[McLucky001]

Hi, I apologize in advance if this has been discussed. I am getting an APR stage one tune next week and only have access here to 91 fuel. I am wondering if anyone has used a fuel additive or octane booster to get to 93. Also, does that (91 or 93) need to be selected within the tune?

Thank you in advance

 

[DWildman]

You are allowed to choose 91 or 93, you will love it, worth every penny!