Did you try Chomedey Ford yet ??? they don't have a dyno, but they tune many Foci there with turbo's ect, maybe they could be of assistance .
You could also try Trac racing in St-eustache, Camo tuning in Lachine, they are great places that i'd recomend highly, i'd definatly go there if i needed help ......
Some-one said in a thread recently A.D. tuning in Dorval was another good shop to check out ......