Join Date: Jul 2009
Location: mpls, MN
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I can only offer this, I work on motorcycles for a living and have have never had one of them run still (in any manner, good bad or indifferent) with a bad ecm (due to "wearing out", corrosion or some other type of similar problem).
I have however had a few customers drill through their ECM (for fender eliminator and liscense plate relocation---idiots!) and they have still run, albeit with some problems. So I wouldn't say it is out of the realm of possibilities.
If you trust them, I would think it is a no brainer and do it. If it doesn't fix the problem the shop/mechanic should stand behind their work and find the real problem and not charge you for thier misdiagnosis...IMO