high flow exhaust, PFC retune?
 

Hi, a mate has a series 8 with a power FC, stock turbo's, cat back 3inch, decent front mount & twin pods, among other things. he wants to fit a high flow dump/front pipe & no cat for the track, will he have to get another tune or can he run it with an existing tune? ( i think he has a 14 pound higher boost tune). its probably a no brainer but i'm not sure..(inexperience) any help would be greatly appreciated thanks

Definetively need a new tune.

new tune and boost controller for the open exhaust.

Jeff