Thread: Jb4 with bcm
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      02-28-2016, 02:37 PM   #3
Svenm5
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Drives: f10 m5
Join Date: Jan 2016
Location: Belgium

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I am still in warranty so the jb4 is better in that way but on the other hand would it be nice the achieve the best possible results. I believe the jb4 doesnt remove the top speed limiter either.
What are your thoughts about the dinan s1. I read it adapts fuel and ignition trim aswel and is also p&p. Is a ecu tune still better?
Appreciate 0