Yup... Turned lots of Golf R customers away because I thought they had an med17 ecu which I am not looking into tuning yet, but then another tuner points out they are med9 which I am happy to work with and understand well. I got a golf r due in for some R&D soon. I have not failed to tune an med9 or me7 to the power needed with the mods, the let down is the hardware limitations. Give me a tfsi setup good for 1000bhp and I am sure with time I could get the map to compliment 1000bhp, same with the dubshack racing mk4 golf, every other tuner refused to tune it or wanted to fit standalone ecus, but after 100+ hours live mapping time I managed to take a stock me7.5 1.8t 150bhp map to 810bhp, and thats not the mapping limiting the power. If I feel confident tuning I will do a good job, if I am not confident then I won't entertain the job, I will send to a tuner who I think has the skills. All my big turbo / hybrid tdi stuff all gets pointed straight to Darkside because IMO they are confident with TDIs full stop.