Attention: TDR Forum Junkies I just wanted to offer another alternative for a muffler swap that brings out that Cummins growl!
Last Wednesday I had the local exhaust swap replace the stock muffler with a 4" in/out Flo-Pro straight through muffler. I decided against going for the full 4" pipe system since the stock exhaust pipe was 4"already from the muffler and in pretty good condition and I was keeping my truck at stock power levels.
It sounds great especially without the silencer ring! I think the exhaust shop owner was more excited than I was when done when he said something like, "Yeahhh... now that's the sound of a healthy Cummins diesel!" With the 6-speed and putzing around town you can hear the deep sound with the turbo whistle between shifts, taking off, or slowing down. When you get on the go pedal- it sounds like a straight piped 12-valve
Normal interstate cruising at 75 mph is a bit louder than stock, but you can still hear the wind noise and stereo without noticably having to turn the volume up.
As far as performance goes I also noticed it revs up a bit quicker. No idea as to EGT since I don't have gauges yet. I'll have a 80% highway mileage figure tomorrow when I fill up again. Also, at an intersection this morning, I caught a ford diesel owner waiting across from me quickly roll down his window and lean out to look back at me when I took off!
I also need to get an exhaust tip as the Flo-pro replaced the stock offset muffler and moved the tailpipe exit a couple inches in (no increase observed in cab diesel exhaust smell though). Any recommendations for a tip that will not change the sound as is?
The best I can describe the sound is like this already good sounding Magnaflow sound clip recently posted on the DTR website, but slightly deeper:
http://home.comcast.net/~ryanmiley/magnaflow.avi
Last Wednesday I had the local exhaust swap replace the stock muffler with a 4" in/out Flo-Pro straight through muffler. I decided against going for the full 4" pipe system since the stock exhaust pipe was 4"already from the muffler and in pretty good condition and I was keeping my truck at stock power levels.
It sounds great especially without the silencer ring! I think the exhaust shop owner was more excited than I was when done when he said something like, "Yeahhh... now that's the sound of a healthy Cummins diesel!" With the 6-speed and putzing around town you can hear the deep sound with the turbo whistle between shifts, taking off, or slowing down. When you get on the go pedal- it sounds like a straight piped 12-valve
Normal interstate cruising at 75 mph is a bit louder than stock, but you can still hear the wind noise and stereo without noticably having to turn the volume up. As far as performance goes I also noticed it revs up a bit quicker. No idea as to EGT since I don't have gauges yet. I'll have a 80% highway mileage figure tomorrow when I fill up again. Also, at an intersection this morning, I caught a ford diesel owner waiting across from me quickly roll down his window and lean out to look back at me when I took off!
I also need to get an exhaust tip as the Flo-pro replaced the stock offset muffler and moved the tailpipe exit a couple inches in (no increase observed in cab diesel exhaust smell though). Any recommendations for a tip that will not change the sound as is?
The best I can describe the sound is like this already good sounding Magnaflow sound clip recently posted on the DTR website, but slightly deeper:
http://home.comcast.net/~ryanmiley/magnaflow.avi
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I need a little more NOISE!!!
