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Donaldson M070028 The guys in the beginning of the thread gave the numbers data as to how much the dB was reduced, but this is a pretty good audio of before and after to help put it into perspective.

After.... http://youtu.be/i2D_f5yiPR4 Honestly, I think the sheet metal rattles louder than the exhaust, but the sound inside the cab was dramatically reduced. I'm just wondering If I'll get sick of the pipe sitting that high and cut some off. I hope this helps folks on the fence. The...

Before.... http://youtu.be/0KYOMCI3vHU

Ok... one MONTH to get the job done. (Seriously, it took 1/2 an hour and I was dawdling.) I have video before and after with audio. I'm going to upload once I figure out which camera caught the best audio. As you will see, I didn't shorten the pipe after I cut it. The extra 18"-20" doesn't...

Bumping this up because barring unforeseen problems, I will be doing this mod tomorrow. Pictures to follow as well as an attempt at a before and after video with audio. Edit: No joy. I need to grab an adapter to put the top back on. Maybe sunday.