How much is this 'modification' hurting/helping/doing othing

[Kiwi LS2]

Just curious as the title states, was on the car when I bought it. With the cut out open it does sound like thunder, but can't see how only one is any good for performance? Thanks in advance!

[MyM8V8]

What a mess. I couldn't have that on my car, whatever it did.

[Kiwi LS2]

Some ugly welding that's for sure. It will be getting pulled in the new year, other priorities over the next few months...

[hammo19]

I thought exhausts were designed to take hot gasses away from the car like at the back or side not underneath the cabin!

[GaryNoGrip]

That's where mine is too (a bit neater though!) I'm having it moved back as the droning is unbearable, but don't want to shut it lol!

[Kiwi LS2]

Yeah I knew someone else on here had them there! Does drone a tad at high speed, anything under 50 sounds just bloody good in fairness.

Was there a centre box in here a standard?

[GaryNoGrip]

Don't know as not standard cat back

[stevieturbo]

That looks 10x worse than something I welded up ! lol

And my welding aint good at all lol