Just got the R57 walnut blasted at 85K miles. I'm the second owner and this was its first blast. Got the car w 75K miles 3 yrs ago, could feel a slight miss esp when cold, but no CEL and no codes. CEL came on and misfire codes a month ago. New plugs and coils gave it a bit more pep (placebo effect?) but still misfiring.

3 hours labor @ 150 per, WHAT A DIFFERENCE! Smoooooth power, what a rush!
HIGHLY RECOMMENDED. Dealer no charge loaner ('22 Clubman S), nc top of of oil and washer fluid, quick detail and wash, an overall great experience. Much prefer this over "my buddy knows a guy who works on MINIs"