I havent heard of anyone doing that but does seem like a good idea and i'll be looking at doing it after the new year. i think it's the garage i went to (wallace Performance) they much prefer working on japanese machines apparently! I'm an operations co-ordinator for Weatherford "specialise in BOP's and pressure control equipment" looking to move back down south next year if i can find the right job in the right location. I think manchester has a bigger market for tuning garages and yeah that sounds like a good idea. I'm pretty new to this forum so its good to get to know a few people 
Jodie
Jodie