Will my tune still be good?

Hey guys. I don't know a whole lot about tuning. I know some of the basics, bu tnot in this case. My car is currently tuned (custom burnt chip) for 6psi. If I up the boost a bit, should be tune be ok still? I have plenty of fuel (255lb in tank and t-rex inline) and injector to handle the power. I'm just concerned if the tune will be able to handle 9lbs. The curent tune has an almost flat a/f ratio graph all the way across, so im assuming the guy did a good job and it shoudl be ok?
Thanks.

I have a diablosport Mafia because I pegged my maf before so I should be good with that. Thanks, I think im going to go order the pulley now.