Chris it`ll do it no harm whatsoever. FYI I followed an E90 320d from 80-140 and my remapped 325d was only marginally quicker. I think he was pretty much done there and I could`ve gone for another 20-25 but acc. wise there was very little in it. His must`ve been really boosted `tho as there was smoke pouring from the exhaust and I mean really pouring like a smoke screen. If you don`t have a particle filter bear this in mind but any decent tuner will accomodate for this anyway.
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