“An educated consumer is our best
customer.” Therefore, it is important to provide enough facts for you to
make an educated decision. At Bob's Muffler we pride ourselves
on providing you with the best technology available, giving you the most out
of your Ford, Chevy or Dodge diesel truck.
PIPES & POWER
Pipes are critical to high performance. Bob's Muffler offers
mandrel bends for better flow versus stock. All-aluminized or
gives them a longer lasting sharper appearance. Our custom made
tooling allows us to produce a product that will give you the most power
The improved flow that comes from a mandrel bent pipe makes Bob's
Muffler pipes, and systems superior. The mandrel bending process
maintains a constant inside diameter, even through pipe bends. Flow
area remains consistent, increasing flow more than 35% compared to stock,
serrated bent pipes.
With an internal combustion gas motor there is a point of diminishing
return on pipe size. With a diesel motor, bigger is better. Bob's Muffler mandrel bent 4" exhaust systems will give you wide open
performance for the most power possible, and improved fuel economy,
horsepower, torque, and lower exhaust temperatures up to 20%.
Our Diesel mufflers are a straight-through design.
Straight-through with no restrictions. No restrictions equals better flow,
and better flow equals more horsepower. It doesn't get any better than
BOB'S MUFFLER SYSTEMS VS PRE-BENT KITS
Why buy one of those expensive kits that are chopped up so they will fit
in a box, when you can buy a custom bent system from Bob's Muffler that will
give you superior performance. We are one of the only muffler shops in
the United States that can mandrel bend your diesel system, our
competition has no choice but to sell you an expensive kit. Here is
one example why our systems are superior: If you have a catalytic
converter on your truck you will have either a 3" or 31/2" connection on the
inlet and outlet of the converter. Those pre-bent kits are designed to
bolt on to your existing converter, that means that your 4" system
will have only 3" or 31/2" flow instead of 4". Bob's Muffler will
custom fabricate your converter and your system so it will have a 4" inlet
and outlet. Bob's Muffler systems will give you true 4" flow from
start to finish to give you the most power possible.
All 4" systems come with a Lifetime parts and labor warranty (call store
for details). Bob's Muffler uses only the highest quality parts
available, give us a call.