YuriLowell
Member
You're thinking of the IMS, and there's a relatively cheap fix for it so it's not a problem (and it was a very low failure rate in the first place). Don't know about cylinder walls cracking in Caymans.
No. Both are problems.
RMS costs around 1500 dollars to upgrade to the 997 version.
IMS you have no idea when its going to go, and there is no perm fix for it. There is the retrofit kit but its not that proven.
For the RMS and IMS fixes your looking at close to 5k in parts in labor to get it done.
Don't buy a 996.