Quote:
Originally Posted by showtime456
dam just bought the jb4. Live in Queens. Are you able to piggy back off that? Also see nothing for the 640i
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Our DME tune handles boost control strategies and the maps that are altered do much more than the JB4, so in that case, you would ONLY need the re-flash.
The JB4 should be taken off, but if you can find a way... if could be left on as long as all of the settings were zero'd out and not altering any parameters. Some people like to use it to monitor boost and that sort of thing. You just don't want a back end flash and a JB4 both altering the same parameters causing extreme timing or fueling changes.