Quote:
Originally Posted by voyagergab
On warranty coverage …
Ten years ago I bought a six month old 2012 535i.
It was a heavy and not very well handling car so I added M5 wheels and my BMW dealer got me some AC Schnizter springs which helped a bit.
But power was still lacking so my BMW dealer offered to install the just released Dinan piggyback. The BMW dealer was also a Dinan dealer.
In the following year I ended up with multiple reduced power events and codes were thrown.
Long story short after a while the dealers mechanics discovered that the engine had scored rod bearings.
BMW denied warranty because I had Dinan. And Dinan denied warranty because scored bearings was a common issue with N55 motors.
BMW dealer said to replace the motor. But the cost was not making sense for what the car was worth.
I’m not saying the piggyback caused it. For what I know the original owner may have never changed the oil.
Lessons learned: only buying new then I know for sure the oil is good.
And take the warranty from Dinan with a grain of salt.
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I thought bmw had to prove the piggyback caused the issue… did they connect the dots? Or just blanket denial?