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slowmover · 06-07-2009, 08:44 PM

I bought my 2004 NV-5600 QC/LB two years ago. The previous owner had installed a 4040 Aeroturbine prior to his trading the truck in the fall of 2006.

I owned an 8,000-lb GVWR aero aluminum travel trailer; the combined rig weighed just under 16,000-lbs loaded for full-time travel.

The drone was so hard at highway speeds I had to ask my wife to practically shout at me so I could hear her (I have no noticeable hearing loss AND no jokes about wives & one's hearing) as we traveled my usual 64 mph/1850 rpm on the Interstate. I've driven big trucks quite a bit, and I've owned 1960's and 70's dual exahust big-block sedans that were road cruisers, and even when they developed problems, well, this truck was the worst for comfort.

I researched this question online and found that the ROKKTECH Silent Might would work great with the A/T as a resonator. I did just that: the A/T is mounted forward considerably of the S/M; and in turn, it was mounted directionally for the quietest sound.

The sound is great on the exterior (none of that garbage truck sound too many diesel truck owners think is cool), and the interior is as quiet -- or better -- than a stock truck.

I understand that A/T has added resonation capacity (if that is a term) to their muffler line for those who want sound reduction. I doubt it would have fitted what I wanted for a 12-14 day in and out of the truck for 600-miles (my preferred limit).

As to performance, well, my fuel mileage just cracks 19 mpg in town and is 22+ on the highway so I have no concerns about temps or restrictions. The two worked well together.

__________________
2004.0 2WD 305/555 NV-5600/3.73 QC/LB. Stock but for Leer topper, Aeroturbine 4040 [resonator] & Rokktech Silent Might [muffler]. 155,000 miles/3,922 hours @ 40 mph; 19 city/22 hwy logged [all miles at 1700-1900 rpm]; 7,460# scaled.

06-07-2009, 08:44 PM	#7 (permalink)
slowmover Cummins Fan Join Date: May 2009 Location: Corpus Christi, Texas Posts: 44 Thanks: 3 Thanked 0 Times in 0 Posts slowmover's Truck Pics	I bought my 2004 NV-5600 QC/LB two years ago. The previous owner had installed a 4040 Aeroturbine prior to his trading the truck in the fall of 2006. I owned an 8,000-lb GVWR aero aluminum travel trailer; the combined rig weighed just under 16,000-lbs loaded for full-time travel. The drone was so hard at highway speeds I had to ask my wife to practically shout at me so I could hear her (I have no noticeable hearing loss AND no jokes about wives & one's hearing) as we traveled my usual 64 mph/1850 rpm on the Interstate. I've driven big trucks quite a bit, and I've owned 1960's and 70's dual exahust big-block sedans that were road cruisers, and even when they developed problems, well, this truck was the worst for comfort. I researched this question online and found that the ROKKTECH Silent Might would work great with the A/T as a resonator. I did just that: the A/T is mounted forward considerably of the S/M; and in turn, it was mounted directionally for the quietest sound. The sound is great on the exterior (none of that garbage truck sound too many diesel truck owners think is cool), and the interior is as quiet -- or better -- than a stock truck. I understand that A/T has added resonation capacity (if that is a term) to their muffler line for those who want sound reduction. I doubt it would have fitted what I wanted for a 12-14 day in and out of the truck for 600-miles (my preferred limit). As to performance, well, my fuel mileage just cracks 19 mpg in town and is 22+ on the highway so I have no concerns about temps or restrictions. The two worked well together. __________________ 2004.0 2WD 305/555 NV-5600/3.73 QC/LB. Stock but for Leer topper, Aeroturbine 4040 [resonator] & Rokktech Silent Might [muffler]. 155,000 miles/3,922 hours @ 40 mph; 19 city/22 hwy logged [all miles at 1700-1900 rpm]; 7,460# scaled.