Quote:
Originally Posted by wolz
My understanding is that bmw can tell that the ECU has been tampered with, even if you got those that revert to stock-settings...So if you get a major break-down on the engine, they might tell you "sorry no warranty, pay up if u want it fixed". Depends on the dealer... som are more kind than others.
But on the other hand, if one would chip-tune at a serious tuner they usually "take over" the engine-warranty so if the engine break down they will take the cost for the repair. That would indicate they are pretty certain their product won't damage the car. But defenitely a good idea to have a look at the tuners policy if things go bad.
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I thought this was only if you physically tamper with the ECU- if you're doing a software remap- this they wouldnt be able to tell. The bluefin itself takes a copy of your actual ECU