I'd be careful about a resonator delete and a perf core muffler. My friend did it and it was brain-rattling loud (12v V6). He installed a Vibrant 12" resonator afterward and it helped a lot, but with no resonator and a Magnaflow 14816 it was loud enough to be painful.

 

i am running a tp/straight pipe to a magnaflow..... it is louder, but my teeth are still intact

 

I can see a 1.8T being quieter due to having the restriction of the turbine as a semi-silencer vs my buddy's V6, which had nothing of the sort. I know my twin turbo Z was quieter with catback/DPs/TPs than my friend's NA setup with headers and catback, but running through the OEM cats.

 

don't get me wrong my wife absolutely hates it.... and i would say it is quieter than my s-10 that i ran no exhaust on for a while.... it was the 4.3

 

Like it mentioned it the OP, it's already so f-ing loud and is giving me a headache. I should be running with earplugs in. It's currently off at the flexpipe...talk about loud! I just need it so it's a little quieter and emissions friendly so I stop choking on the fumes.

 

do u have a 1.8 or 2.8? i did a mid resonator delete with the ecs tuning muffler and it sounds awesome... on start up there is a nice deep rumble to it... i have a 2.8 btw