ratter, so this software can be brought from herrod? I was told by VCM that their software was ok up to 350rwkw. It must be these missing parameters that come into effect thereafter. Once I get the base tune in on the dyno(from the tuner)I can then tune it on the road to perfection with a wideband for the AFR's and readings from the knock sensor for ignition timing.Tuning on the dyno is ok,but tuning on the road will always get better results. The pro tuner would want big $$$ to spend hrs logging/tuning the car on the road,which I can do myself for free. I have done the same thing with EFI live which is similar to VCM on a r8 that I had. keep a close eye on your AFR's and timing,no damage can will be caused.