A Dynomax or Magnaflow muffler would probably deaden lots of noice, just go with something straight flowing.

 

It is petty damn loud without the cats. I went with a magnaflow 3 inch straight thru. quiet when cruisung around, but sounds good when you get on it.

 

I cant wait to see how it is with no cats, hell id just like to hear what its like....soon i guess. Justin you see it lately?

 

that's just something I can't do living in CA and all

 

Do they use the sniffer there. If not take the y-pipe off and punch them out. Then turn off the rear o2 sensors. No one will ever know.

 

I took my cats out and it was horribly loud. I put a 2.5 inch straight threw magnaflow on before the turbo. It sounds pretty good. The turbo spools up faster and you can really hear the turbo threw the exhaust.

 

JC, was the time in your sig on 5 or 8 psi? Street tires or DR? Just curious. Your set up is almost identical to mine. I've got the same muffler with 3 inch inlet and outlet. Best time i've managed so far was a 14.04 @ 100.53.

 

good choice...magnaflow was mine also and always will be

 

And add a big cam... It's pretty damn loud then.

 

any gains gutting the cats on the sts system
or just noise?