A good TMer gave me an early nod that an ECU update was going to be available for GDI Plus 4's.
So I have had mine done and can say that the 'issue' of high revs on cold start is still an issue but the general running is improved. It has leaned the lower rev ranges so the car isn't so sooty and I now have a nice burble from the exhaust on overrun.. No banging and popping but just a burble. It feels cleaner and crisper at 'normal' revs and I don't have the muck dribbling out the tailpipe.. Probably the MPG will be better too, So overall it's worth it.
