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I installed the jb4 piggyback a month ago or so. I like the options in having maps. I run map 1 most of the time which is more conservative and less strianful on the car and if I'm up for some friendly runs map 2 is a touch of a button away with more boost. You also have map7 for race gas.
The negatives being I don't get the increased speed limiter removal and I can't pass inspection in NYS if you have downpipes. However I'm under warranty until 05/2020 so I will get a backend flash by then.
Also increased boost wears down your spark plugs much sooner.
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