Sadly we don't have a knowledgeable S&S ECU tuner with a M3W compatible dyno at Krazy Horse or anywhere else in the UK now either. Not many dealers that know there stuff with M3W's here, so the "every sniffle" 😁 option doesn't exist either and I doubt things will improve with the end of production.
Going back a few years , Matt at Matts Machine Shop ( mattsmachineshop.co.uk ) was S&S trained on tuning the X-wedge, and while he didnt have a dyno in house , he had access to a suitable local dyno a mile or so away.
I have not been in contact for a good 5 years but have no reason to believe he has stopped trading.
I used his tuning services after I upgraded to Morgan stage 2, he fitted roller rockers for me, then tuned it on the dyno.
