I am looking at taking my centre muffler off my 2005 falcon XR6 to get a better sound. Will it be noisier inside the car on trips as this is mainly what it is used for. Cheers.

i have just replaced my xzorst with this setup!
pacemaker 4499's
1 high flow 100cpsi racing cat! illegal though!
and the full 2.5 inch sports system with 1 muffler!
as soon as you kick it into life in the morning it sounds f**k awesome!
the only problem i have found is this!
if you put your boot into it to take off from a stand still it will echo of everything in site very very loud!
but have since worked out to slowly get up to speed then just maintain that speed with gentle pressure on the accelerator and everything is fine .
once i am at say the required speed limit the sound is almost as quiet as the original stock xzorst.
only problem i have found wich i cannot avoid is going up a hill !
as soon as my engine is under load going up the hill the xzorst screams it's tits off.