Technosquare can do a relash for you, no probs. Thing is, a tune via this method isnt the best solution as it will have to be a off the shelf map, as it were.
Also, the factory ECU is pretty low resolution, which isnt so much of a problem for N/A, but isnt the best for FI, where you need as much accuracy as possible.
UTEC would be your best bet.