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| At Last - we've found the cure |
Eliminate annoying in-cab (70-75 mph) drone while Increasing Performance and MPG's with the Aeroturbine Muffler - Exhaust Guide Combo
NOW at a
HOT NEW PRICE!!
Exhaust Guide with AeroturbineAT4040XL
Designed to give your diesel truck an incredible performance increase while maintaining a tone
that is similar to stock sound levels, the Aeroturbine 4040XL incorporates a resonator with the technology of
the AT4040 into one unit. 4" Exhaust Guides are a simple solution to the frustrating issue of in-cab drone or noise for trucks using after market free flowing 4" exhaust systems. If you truck develops a loud annoying sound at highway speeds and gets even worse when you are towing a load, then you are familiar with this drone problem. Basically, the drone is caused by a harmonic exhaust frequency set up by turbulent exhaust gas flow which causes the exhaust pipe to make sounds that resonate through the cab. When the exhaust guide is placed after the down pipe it will decrease exhaust turbulence by smoothing the exhaust flow and directing it straight down the pipe, towards the back. Exhaust Guides increase mileage, reduce EGTs and sound by directing exhaust gases straight down the pipe. When used at the inlet of an Aeroturbine we have seen EGT reductions of 75F and a mellower quieter sound. Combining this muffler with our Exhaust Guide insures that you
will eliminate the annoying in- cab drone.
Muffler - 4" in, 4" out. -26" tip to tip- 6" diameter.
Exhaust Guide - 4" diameter, 8" long
$262.55
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4" Exhaust Guide
Exhaust guides are a simple solution to the frustrating issue of in-cab drone or noise for
trucks using after market free flowing 4" exhaust systems. If you truck develops a loud annoying sound at highway
speeds and gets even worse when you are towing a load, then you are familiar with this drone problem. Basically, the
drone is caused by a harmonic exhaust frequency set up by turbulent exhaust gas flow which causes the exhaust pipe to make sounds that resonate through
the cab. When the exhaust guide is placed after the down
pipe it will decrease exhaust turbulence by smoothing the exhaust flow and directing it straight down the pipe, towards the back. Exhaust
Guides increase mileage, reduce EGTs and sound by directing exhaust gases straight down the pipe. |
Exhaust Guides reduce
EGTs and sound by directing exhaust gases straight down the pipe. When used at the inlet of an Aeroturbine we have seen EGT reductions of 75F and a mellower quieter sound.
Exhaust Guide 1E140 which is belled on one end so it can be used in the inlet of the Aeroturbine. |
Here is what one customer had to say:
We installed the Air Guide honey comb 10" back from the center of the downpipe bend. It is about 12-15" ahead of the
Aeroturbine. The initial run was solo, but up a steep hill from a stop. We could not believe the decrease in the noise level in the cab of the truck. This is
exactly what I wanted to accomplish. Hard to realize that a short honey comb section could change the tone that much. The overall Diamond Eye exhaust system
with the Aeroturbine had gotten louder in the approximately 8000 miles since installation. I did not notice any difference in power or throttle response on
the test run. The real test will be towing next week to Banks Lake, over Stevens pass and the climb from Wenatchee up to Waterville.
What kind of life expectancy should I get on the Air Guide, will the honey comb burn out in time?
I will let you know after we return from the lake if their are any other observations.
Bob Jenista
2002 Chev Excab long box
Duramax/Allison - No Cat
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