Originally Posted by ronny214
It varies from person to person. From what I've read of the reports, it has also been happening on completely stock cars. Not sure what the symptoms would be for a crack, I'm sure it varies based on how bad it cracks/busts, but if it is bad enough you pretty much lose power and have to "limp" home or to a shop. Hasn't happened to me personally, so maybe someone who had the unfortunate experience can let you know what their symptoms were.
We've had several customers completely stock with cracked Cps. Its probably a lot more common then you think as most just get it fixed under warranty.