It doesn't run a different engine map in Eco to start with though and I didn't think the mode selection actually had any ability to change engine maps, so how did he make that work?
APR used to offer switchable maps on older VAG cars via (IIRC) the cruise control stalk, so if it was as simple as loading different maps to the different driving modes i'm amazed they don't offer that now.
I don't think i've ever heard of a mapper, custom, branded, whatever, that loads up different engine maps on the mode selection system?
I did not map the car, so I have no idea how he did it. But ECO mode the car is noticeably slower, less boost and the mapper did inform me of this also, so it was deliberate. He also gave me the option of a pops and bangs map which could be assigned to one of the other modes if I so wished, but I declined as I think they sound rubbish and the mapper also suggested it was a bad idea with a sports cat and only recommends it for cars running a de-catted downpipe.
Like I say a custom mapper is leagues beyond an off the shelf map which is what essentially APR and REVO offer unless you pay for a true custom map from them.
Unicorn has a fantastic reputation and all his cars though down on power, give much better real world results, 1/4 mile, vmax days, acceleration times etc. and lets face it real world performance and drive ability is far better than any dyno result from a happy dyno.
A little like EFI for the Renault boys, when he mapped my Clio 172 Cup it gained 3-4HP peak, so in short did very little if you just look at the numbers, but the car was smoother and was a good 5-7mph faster by quarter mile mark.
Anyway as I say on my Golf R Unicorn was able to offer different engine maps on the mode selection system and his TCU map is pretty much the thing of legends. My Golf R is still at OcUK still running said map and is driven daily and hard, it has had zero issues and is a totally faultless car and its on around 55-60k miles now, when I got the car it had an off the shelf remap on it and to be blunt it was pretty crap, yes there was more power but it felt very boosty, just a load of mid-range torque and then nothing. When Unicorn got the car I said I want real world performance and I want the engine to feel like it wants to rev out and not be just a mid range torque monster, he checked it over and did not say anything bad but did mention the torque was over loading the clutches and making the gearbox run hotter which he did not advice on stock clutches.
Look up my thread the results are in there but I think my car finished up around 367HP and around 355lb/ft, the difference in engine and gearbox after he mapped the car was night and day and it felt more eager and it revved out beautifully and its real world performance was nothing short of staggering. It was certainly a faster car than a stock GTR in the real world, hence why to me it was like a Mini-GTR.