installed mbrp 4 in turbo back with cat and muffler delete

I dont know what to think about the sound, it sounds like a huge hair drier when at idle, and it has the V8 rumble in drive, the whistle of the turbo definently put a smile on my face when i pulled out of the shop
It seems to have lost upper rpm power though, do i need to disconnect battery or something to let it reprogram more airflow?

 

ok i just got back from driving it all day, I love it...

 

i have the turbo back with the kitty and muffler, luv it!!!!!!!!!!!!!!!!!!!!! great system, easy install, luv the sound and performance....

 

it sure as hell makes it sound faster, does yours sound like a danm glasspack when you get on it?