I ran my OM602 NA with the exhaust cut from the front silencer back for a few days (long story). Besides the drone being almost deafening, it sounded really good. The car sounded like it was much faster than it was. It actually made the car much slower because I didn't want to be revving it out, especially in residential areas. I did purposely scare some people with the noise and the smoke as this was before I sorted out the fuel system.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.