pretty loud..i luv my JIC...i have HFC, JIC Y-pipe and single exhaust..u shud hear my car on the dyno..soooo freaking out...LOL..it gets annoying when u first have it on...eventually, u'll get use to it..i'm sure its a louder then your last exhaust u had..enjoy it..

 

ya i think mine is way loud.. louder this JIC and agency, but im not sure.

any clips?

 

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This was all recorded w/ a 35mm cam...so quality isn't as good..but u get the point..I had this recorded when my car was still untuned..
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I just got my car tuned so it doesn't sound like this now..it even idles different..its amazing wat a tune can do for your exhaust and car

 

Compression ( or crush ) bent pipes loose diameter at every bend because they are crushed at the bends. This is somewhat restrictive and unless you made the pipe diameter larger, you really aren't doing anything to help performance. Flex sections ( like the stock Y-pipe has ) allow some flex in the exhaust to keep it from cracking over time.