personally i dont recommend removing the centrebox, realy doesnt do much for noise if thats what you would be trying to acheive but thats imo. :)
 
How do you mean Dubz? As in it makes it sound **** or doesn't make much difference?

I had a bespoke system made by Blueflame last year with a centre silencer as I didn't want it any louder than my old Milltek but it keeps knocking. I've had it adjusted by some local exhaust places a few times but over time it always goes back to where it was and starts knocking again so I'm weighing up the idea of replacing the centre silencer with a straight pipe it but not if it increases the noise by a noticeable amount
 
I took the silencer out of my milltek you wanna hear it on boost Uber cool :D

must be my backbox thats not making any difference to it then..... i paid £70 to get my centre box removed and i really think it hasnt made nooo difference in the tone of the car, sounds ok inside the car but i let a mate drive it and it was sooo quiet.
 
I got a milltek cat back but the rear box has been replaced for an oval one. Pops and bangs quite a bit whichi dont like, would much rather a quieter more discreet exhaust. Anyone wanna swap? Would really like an oval tip still though. Let me know if anyones up for it :)