Muffler Delete Pipe Frequently Asked Questions
1. Is a muffler delete legal on the street?
Exhaust laws vary by state and province. In many regions, removing emissions equipment or exceeding noise limits is restricted. Our muffler delete pipes are primarily sold for "Off-Road Use Only" or competition applications.
2. Is a muffler delete bad for the engine or turbo?
No. On the contrary, reducing backpressure is generally beneficial for turbocharged diesel engines. It allows the turbo to spool faster and helps lower Exhaust Gas Temperatures (EGTs), which can extend the life of engine components.
3. Will a muffler delete add horsepower or improve MPG?
Yes, you can expect a modest gain of 5-10 horsepower and a slight improvement in fuel economy (MPG). By removing the restriction, the engine doesn't have to work as hard to push exhaust gases out.
4. Will a muffler delete cause drone on the highway?
A pure straight pipe may cause some "drone" at specific highway speeds. If you are sensitive to cabin noise, we recommend our 6.7 Powerstroke delete pipe with muffler, which balances flow with a more refined sound.
5. What size muffler delete pipe do I need?
This depends on your current exhaust diameter. Most stock 6.0 Powerstroke systems use a 3.5-inch muffler delete pipe, while most aftermarket or newer 6.7L setups require a 4 inch or 5 inch muffler delete pipe.
6. Can I install a muffler delete pipe myself?
Yes! Most of our kits are designed as bolt-on DIY projects. If you have basic hand tools and access to muffler delete pipe clamps, you can typically complete the installation in 1-2 hours.
7. Do I need a tune after installing a muffler delete pipe?
If you are only deleting the muffler, a tune is generally not required. However, if your kit includes a 6.0 cat delete pipe or DPF removal components, an electronic tuner is mandatory to prevent fault codes.
8. Will my truck be too loud with a muffler delete?
"Too loud" is subjective. A muffler delete provides a deep, aggressive growl that is noticeable but usually manageable. If you want maximum volume, go with a 5-inch muffler delete pipe; for a subtle upgrade, stay with a 4" resonated version.
9. Does a muffler delete affect emissions tests?
In many states, the muffler itself does not affect the chemical emissions output (that's the job of the CAT and DPF). However, some inspection stations may fail a vehicle if any part of the factory exhaust system is missing or modified.
10. Will a muffler delete void my warranty?
According to the Magnuson-Moss Warranty Act, a dealer cannot void your entire warranty unless they can prove the aftermarket part caused the specific failure. However, we recommend checking with your local dealer first.