Heading to the track for the first time with my 09 xi this weekend and Im really unsure which Jb4 map to use? I have meth (50/50), DCI, mid pipes and I run e40'ish, with 106 race gas available if needed. Should I stick with map 3, e40/race gas mix and up my "additive" value to 50 or just set it to map 7 with the same e40/race gas mix? Maybe use meth with map 7? Thanks for any input!
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