Yeah but only on turbo diesels. A remap can see you 35BHP increase. A tuning box sees you a 25BHP increase. (Both within car reliability limits.)
This doesn't work on all cars petrol or diesel. Just the ones specified. Works via the OBDII socket. As mentioned this is cheaper than a remap and does as it states, best thing is you could remove it and put it on your next car (aslong as its compatible) or sell it on. (unlike a remap that stays with the car).
Remaps give the best gains, especially custom maps but generic maps aren't that much better than a generic plug and play tuning box for JTD diesels. Reasons tuning boxes only give 25BHP is to not push the car to the extremes, giving no adverse effects later, like clutch slip etc. A custom remap could see 75BHP if not more from a Bravo JTD but will it handle it, definately not.
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