I know Rolling Road garages who 'fettle' the final result. Which I dont like at all.
Customers should see exactly what their car is running - better to see it running less, and continue tuning, than to write one basic mod file and not make further adjustments.
I wouldn't say he's dodgy - I've seen his adverts on ebay and that, and know he isn't writing the mod files himself. Everybody on this site could buy a £1000 remapping tool off ebay and call themselves a 'tuner'.... Thats the state of the industry at the minute.
I've been speaking to K Tec recently and had a chat with a guy (via email) about an engine I am studying. Haven't heard from them for a few days though, but most companies wouldn't know where a rev limiter/torque limiter/boost map was if you slapped them in the face! Doesnt mean a CG Remap will be bad. Just means if you ask to see what has been changed you will probably get a blank face and some headscratching...