Hello, 1st post so be gentle with me
My bro' related this story to me, his next door neighbour reckoned there was a chip or piggyback ecu available that you could fit to a 2007 325 m sport
that would be undetectable by the garage, or at least if it was a piggyback ecu it could be removed before a service.
Is this true or the usual over the fence sunday waffle you get from your neighbour ?
Even if it was removeable, would the garage when doing a diagnostic on the car not notice some parameters had changed ?
Would be interesting to find out if this is possible