I have a high flow H-pipe on mine and it was louder than the stock 4 cat pipe. It will be quite a bit quieter than an off road, but will pass emissions. An X-pipe will also be quieter than an H-pipe but should make a little more power!
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Current vehicles: 1989 LX 5.0: 3.73s, Cobra Intake, 65mm Tbody, Mac CAI, 1.7 RR, Mac LTs and Prochamber, Flows, Pulleys, 17" Cobra Rs!
13.052 @ 103.45
1995 Jeep Grand Cherokee Limited: 5.2, AWD, Black/Grey leather.