[jryerson]

FWIW I think these Companies are criminal not allowing full access to diagnostic software and ecu parameter changes or forced dealer when you replace a ecu

Of course you can have access for $20k a year thats BS

I will gladly buy cheap China clones

Its been awhile since I have had a Porsche 911 my last a 1977 930 sold it 10 years ago too soon. Went to Lambo and Ferrari they are toys you cant drive I miss driving a exotic and yes a Porsche 911 is a exotic 997 here i come LOL

Too answer OP question a Piwis Clone will tell you if your ECU is bad it will not be able to be diagnosed vs the other ECUs in the car. If its bad take it out get a used reprogram or refurbush. I know this is an old post but since I am buying a Piwis clone