As above, sounds very dodgy. Just google, its flash mapping. Stay well clear and find a new mechanic who knows what they are doing with scoobs if he's advising that.
Pet Herborn is based up at scoobyclinic at chesterfield. Mapped my car loads of times of the years for different mods, struggle to find a better mapper.
One incident doesn't represent a company. if that was the case i think every one would be out of business.
20+ years experience in everything from road to rally, track to gymkhana, still trading under the original name. very very few companies can say that ;)
Pay a visit and choose for yourself :)
So issue was found, problem with mismatching ratios front to back, so diff swapped out and car ready to collect now its been mapped. Not managed to go pick it up yet but did get sent this :D
damit, missed 400 by 1.8bhp but feck me, 460ftlb hahaha
Take the oil out of a car after 5k and see what it looks like and you'll understand why it needs changing more often that manufacturers claim. Even the oil producers will admit it needs changign more often that mans recomend