Will tuning make a difference?

When I get my GT tuned with the XE270 cams, with my other mods, make a difference that I could feel? The car feels a little better with cams and its running really rich. I have a friend with a mach 1 that still pulls on the street but I beat him at track. I dont want him to pull like does.
 
Be glad your running really rich and not really lean if you racing it!!!

Alot of people notice a difference after a tune on a mild-bolt on car. I imagine it would really wake up a cammed car.