Want to dyno tune my car, My friend has a ricer place who will do it for like 60 bux, but i don't know if they can tune it so good. Now a mustang place I know of will do it and tune it for 150.00 for an hour. But I dont want to go in there and see lets say 295 and then 1 hour later see 295 again.. I want to see a little bit of diffrence for 150.00 . What did you guys see as a diff. when you went. THANKS