Brian:
Thanks for taking the time to unselfishly share your experience and your sobering perspective on these engines.
Hype and hoopla seem to be the norm on the net these days, leading to near hysteria in some cases.
Your post reflecting your 20 years of hands on experience with Porsches on a daily basis is invaluable.
The fact that you fairly evaluate the benefits of the IMS retrofits available speaks volumes about your uncommon lack of $$ driven bias.
Thank you.
Regards, Maurice.