Channel: JB4 Mobile 12-10-2025, 11:36 AM First pull with JB4 by Jtinajero13 Hi, I have a gen 1 b58, with Dahler ATTC, catback exhaust, intake and running stage 2 xHP. This is a map 1 pull 2018 x3...

Jul 25, 2023 · The JB4 uses MAP-3 as the "Progressive WMI" Setup MAP, not MAP-4, just so you are aware. Yes, you can Run the MHD Stage-xx Map of your choice with the JB4 as a "Piggy Back" to …

I have a 22 Sonata N Line and just installed the jb4 over the weekend. Been running map2 with no problems ( was told my log looked great) So I was wondering if map3 is safe with 93 octane.