We have a Borla 2 1/4" system on our cruiser, and we're quite happy with it. The power increase isn't all that huge, but it's noticeable. Especially in the mid to upper rev range. It's definitely a little louder inside the car, but having been involve in racing for years, I don't find it intrusive, nor does my wife. The exhaust note is pleasant. More of a deeper burble than a raspy growl. Granted it's not that nice throaty V-8 rumble we'd all like, but hey, it IS a twin cam 4 banger after all. Installation was a breeze. It fit perfectly to the stock mounting points, and went together very easily. The hardest part of the job was getting the stock unit off. That took nearly 2 hours!! The new piece was on, tightened, warmed and retightened in half an hour. BTW if anyone's interested in a nearly new stock system, (under 2000 miles on it) make me an offer!!!
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