I read a post by someone who had it done and said there speed increased noticeably they had posted results but i forget the numbers something like six mph gain at a low trolling speed, scream and fly in the US sell a programmer for $1300 USD a bit pricey but if i will be paying someone local the same price just to do a remap it might be worth buying i can sell the programmer on to someone else and recoup some money once the remapping is done