3.0 CRD 3" exhaust straight throu

[Gu with stacks]

gday all

i have a 2007 3litre coil cab with a 2.5" exhaust from cat to a single muffler then into twin 3" stacks . would this flow enough ? or is it worth goin 3"cat back ,straight throu no muffler then stacks would i gain anything over the original set up? would it be excessivly loud with no muffler? atm i cant even hear it

[megatexture]

I unbolted mine before the cat and went for a drive and I could barely tell the difference .I'd love a straight threw but don't want to risk the fines but I don't think you need a muffler, unbolt it and have a listen

[Gu with stacks]

cheers mate , wasnt louder or anything ? thats surprising

[megatexture]

Very Slightly but even under heavy acceleration, I was surprised also