I've got the 2.25" xforce on my stock 2008 liberty 2.5i, its not overly loud, no drones when it idles, when you give it a bit of gas it sounds nice and deep especially around the 3000rpm mark.
it definitely does not sound "ricer" which is nice and doesnt attract unwanted attention, mine came with the xforce 4" tips.
Im thinking of getting a high flow cat as well and then going in for a tune. Anyone have any places to suggest around sydney including prices?
Thanks