Honestly the N1 "JDM" Catback on ebay is not a bad unit at all. My car has seen many ebay parts, and so far I have been satisfied with the catback completely. It was easy to install, took my dad and I under an hour and a half and after pulling the silencer off it sounded great. It definitely has a deeper sound then you would expect, not to loud, but loud enough. Though, be wary that if you have a CAI it will be extremely loud (This is the same with any unit though) Mine was so loud it forced me to take off the air unit.

 

N1 off ebay and headers will be ok? not too loud?

 

Greddy ti-c FTW

 

Ti-C if you want loud as ****, .

 

just go at a muffler shop and make them do a custom exhaust.
i have 2.25 piping from the cat to the rear, and a nice 2.5 inlet 3 inch outlet muffler welded on.
i find it ridiculous to pay high *** **** for a name brand exhaust...
piping is piping, of course stainless steel or galvenized pipes are more expensive but i have alluminized pipes and its lighter and didnt cost me an arm.
and mendrel bent is useless...

 

Mandrel bent means it's a true 2.25/2.5/3" exhaust all the way back.

 

I have had the Greddy Evo 2 exhaust on my car since 2004 and it has a nice deep tone. It has gotten a bit louder over the years, but not loud enough to set off car alarms. The piping is 60mm with a 115mm tip.