Map7 JB4-stage2
I have Jb4 stage 2 with high flow downpipe (200cell) from ChallengeUSA
i'm constantly using map2(14.psi)
i might go to a circuit nearby and want to try out Map7(18.5psi) out there, btw i have new ER F30 chargepipe, do you recommend me to install the chargepipe before going and testing map7 i know it requires race gas but which and how can i know which one is the best for me i know that there are different type of them leaded/unleaded and diff octane ratings.., what's the least number of octane rating should i use,(e.g: 105+octane .)?
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