Last C5

I've got Borla Stingers and I need a something a little quieter to get under the 103 db sound limits that most tracks have now. I'm running a built motor with LTs, X pipe, and no cats. What are you guys getting by with???

alextz

Me too. can always put the stock Ti system back on. might lose a little hp at top end.

Bad Karma

Do you know how close you are to the limit? You could add a couple of resonators/small mufflers where the cats used to be if you just need yo quiet down a bit.

Last C5

Mmmm, that is an economical plan. The limit is 103 dbs and they gave me a reading of 104 dbs the first time and 105 dbs the second time. I don't really know how much quieting that a 2 or 3 db reduction takes. I know that the sound readings are not linear, as 100 dbs is not twice as loud as 50 dbs, and that's about the end of my understanding.

What I was really hoping for was the name of a cat back system that's track proven to pass the sound test, but nobody is coming up with any answers.