Havent heard of these people but id stick to Revo or CC if your going for a remap....Spend the extra because it is ever so worth it in the long run!
My friend sent his ECU off to get remapped on his Golf and payed £100, and all its doing is telling the car to shove as much fuel in as possible, It is anything but a smooth ride as it judders and turbo kicks in then stops... Its awfull!
Depends what mods are done but stage 1 maps are just usual flash maps they use, stage 2 are where they tweak the map to suit the mods done and 270bhp is what you normaly get from this.