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j3vr6 j3vr6 is offline
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Posts: 16
Join Date: Jan 2019
Car: 2016 340i RWD
Default 02-07-2019, 05:18 AM

Quote:
Originally Posted by Terry @ BMS
The flash maps remove some of the limiters in the ECU and get the tuning close to where we want it, and the JB4 handles the rest including setting the final boost target, fine tuning, features, logging, safety systems, etc.
So on a B58, what additional gains would you get with the backend flash installed with a jb4?
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