| I had significant HP gains -> [ http://www.twinturbo.net/net/viewmsg.aspx?forum=general&msg_id=758408 ] Stillen is a completely stainless steel system. (Some, including Greddy SP, have only stainless mufflers. B&B should be fully stainless too, I believe.) Stillen offers a lifetime warrenty. (Greddy 2yr) Stillen's system utilizes an "x-pipe" design versus conventional "h-pipe." X-pipes allow exhaust to flow steadily with minimal turbulence and ease through the plumbing. (Greddy, HKS use H-pipes which induce turbulent nonsteady flow.) I have the "ZR" tip and it sounds great. Not too loud at cruising, sounds wicked at high rpm. And you can set off car alarms if you downshift properly near one:) I believe Stillen is the most pricy.. I don't ever regret for a second spending the $900+shipping for all the reasons I listed above. All my friends think it's THE BEST aftermarket exhaust they've ever seen/heard on an import. Goodluck!
  "Alot of people with this mod & that mod and the other mod and a mod or two of this other mod thingy @ stage XXXXXX can only come up short of 200 rwhp. Maybe your ride is in excellent mechanical condition, even for the mileage (@118k)? Or maybe your just a lucky bloke. Amazing numbers & good job... But I think from your pic, the car is POSSESSED." quickz
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