Quote:
Originally Posted by hayko_M340
I also have a JB4 installed on my M340 as well. Love it but there are a few issues you may run into. Seems as if Jb4 isn’t as optimized for the M340 B58’s yet. On Map 5 with a E30 mix it’s a gamble whether the car will function properly or not. Throws a drivetrain malfunction for me and seems to be running quite lean most of the time. Map 1 & 2 with 91 pump are solid though, never had a issue. Only run into issues whenever I push it a little. Love it regardless highly recommend it but just give it time so they figure some stuff out. Let me know if you run into any similar issues.
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Map5 is a pretty aggressive map! They have a G20 M340 for development purposes so if you need tuning help just get in contact with them.