[thstone]

Yeah, when I took my car in to have my clutch replaced, I asked about replacing the IMS. The owner showed me a stack of perfectly good IMS bearings that he had replaced at the insistance of other customers. I took one look and agreed to skip it.

Why do I temp fate so?

IMS failure is less than 3%. That means that I have a 97% chance of never having an IMS failure. Those are about the overall odds that Vegas casinos run on. Good enough for me.

Of course, someone will end up in the 3%, that is real. And if you can't afford $5-$6K to replace your engine, then you have a problem because the only way to mitigate the potential IMS failure is a $2,000 replacement. (And if you can't afford a $2,000 repair you probably shouldn't own a Porsche. Or a BMW. Or many other similar cars.)

As for the $400 warning system, who knows. But when the warning goes off your only option wlll be a $2,000 repair (on top of a $400 warning system).

For me, I'm going with the odds (97%). And if I end up in the 3%, I easily have the $6K to replace the engine.