I have the Borla exhaust as well. I replaced a big 3-inch exhaust that was returned. Kind of the opposite end of the spectrum. It's very quiet in the low RPM range and purrs nicely in the mid-range where the big exhaust (in my case) had some droning issues. Nice tone on throttle; a little deeper than stock, but obviously not a 3-inch pipe growl. It is perfect for my use. For applications keeping the stock turbo and catalytic converter, seems unlikely that more is needed. I got a
great price match from the guys at ModBargains. Great vendor.
[MENTION=1094]JPGC[/MENTION]: That's good info on the hangers. I reinforced mine with zip ties, but it does hang a little low. I notice that the exhaust walks about 1/4 inch toward the passenger side of the car. Could be due to the zip ties. Not a big deal, but I'm going to see if I can devise something to block that (maybe a little collar zip tied on the hanger support).
Also: Which hangers did you get? I found them here:
http://www2.kartboy.com/x4/search.php?mode=search&page=1
Looks like I'll need to get 4.