Thats no Moon, Thats a space station!
i have used JKM for my Revo remap and they were very good but not tried their rolling road.
The one i used before on my old S3 was at Regal Autosport in Southampton as we had a Rolling road day organised on another forum so i went along as it 15 mins from my house. Never been to one before so cant compare accuracy or anything but it is a proper 4WD one and my old 210bhp S3 APY with a custom code Stg1 map got about 245bhp on them so cant be too far off.
i have also used them to get a few bits done to my car as they used to have a very tuned up 8L S3 so new a fair bit about the cars etc.
Audi S3 8L BAM 225 2002 - Ming Blue : Silver Heated Leather, Armrest, RNS-E & Bose, Alloy Mirrors, Gunmetal 18" RSTT`s, Sunroof, Cruise, AutoDim Mirror & usual S3 extras.
Mods : Revo Stg 2 & Select+, FMIC, 3" DP & 200 Cell Cat, 007P (New Piston), Jetex Filter & 80mm TIP & Heatshield, LED Sides & Fogs, Gen VW Aero Wipers, Full Powerflex Kit, Lowered on AP Shocks & Springs, 15mm Front & 20mm Rear Spacers, N249 Delete & Catch Can, AP TVR 4Pot Brakes & DS2500`s, Sachs DMF & Carbon/Kevlar Clutch