How to Make a 6.7 Cummins Roll Coal

To make a 6.7 Cummins roll coal, you’ll need to modify the exhaust system and add a diesel particulate filter (DPF) delete kit. You’ll also need to tune the engine for more power. Once these modifications are made, your Cummins should be able to roll coal like a champ!

  • Using a cold air intake, increase the amount of air entering the engine
  • Install a exhaust tip that is at least six inches in diameter
  • Remove the muffler and/or catalytic converter
  • Adjust the fuel injectors to add more fuel into the cylinders
  • Adjust the turbocharger to create more boost pressure

Cheapest and easiest way to make your 6.7 Cummins blow smoke!!

How to Make a 6.7 Cummins Smoke Switch

If you’re looking for a way to make your 6.7 Cummins smoke like a freight train, then you’ve come to the right place. In this article, we’ll show you how to easily install a smoke switch on your truck. With this handy modification, you’ll be able to create massive clouds of diesel smoke on demand – perfect for impressing your friends or making a statement at a truck show.

The first thing you’ll need to do is purchase a smoke switch kit. These are readily available online or at most aftermarket truck parts stores. Once you have your kit, follow these simple steps to install it:

1) Locate the wires that run from your ignition switch to your fuel injectors. On most trucks, these will be located in the engine bay near the firewall. 2) Cut one of the wires and splice in the included toggle switch.

Make sure that the switch is in the “off” position before continuing. 3) Run the other end of the wire from the toggle switch into the cab of your truck and mount it somewhere within easy reach. 4) That’s it!

How to Make a 6.7 Cummins Roll Coal


How Do I Get My Cummins to Roll Coal?

There are a few different ways that you can get your Cummins to roll coal. One way is to install a smoke stack. This will allow the exhaust from your truck to vent directly out the back, which will give you a big cloud of black smoke when you rev up the engine.

Another way is to modify the air intake system on your truck so that it takes in more air than it normally would. This will make the engine run richer and produce more smoke. Finally, you can also add a fuel additive to your diesel fuel which will make the engine burn hotter and produce more smoke.

Can You Roll Coal in a Stock Diesel?

Yes, you can roll coal in a stock diesel truck. However, there are a few things you need to do first in order to make sure it’s done safely and correctly. Here are the steps:

1. Find a safe location to do this- ideally, an empty parking lot or something similar. You don’t want to be doing this in traffic or anywhere that could be dangerous. 2. Make sure your truck is in good working order before you start- this includes things like making sure the tires are inflated properly and there are no leaks.

3. Once you’re in the location, put your truck into low gear and rev the engine up to around 2,000 RPMs. 4. Now, slowly release the clutch until the truck starts moving forward- but don’t go too fast! You want to keep the RPMs at around 2,000 so that the smoke will billow out nicely behind you.

If you go too fast, it won’t look as impressive. 5 Coal rolling is pretty simple once you get the hang of it- just remember to be safe and have fun!

Do You Have to Modify Your Truck to Roll Coal?

No, you do not have to modify your truck to roll coal. However, there are a few things you can do to make it easier. First, you’ll need to lower the air pressure in your tires so they’re softer and have more grip.

Second, you can put a weight in the bed of your truck (this is called “bagging”) to help keep the back end down. Finally, you’ll want to make sure the tailpipe is pointing downwards so the coal doesn’t fall out.

Why Doesn’T My Diesel Roll Coal?

If you’re wondering why your diesel doesn’t seem to be rolling coal like other diesels you see on the road, there are a few possible explanations. First, it could be that your truck is simply too new for modifications that would allow it to roll coal. Second, even if your truck is older, it’s possible that it just isn’t set up in a way that would allow for excessive black smoke output – this includes factors like exhaust gas temperature, injector timing, and fuel delivery rates.

Finally, even if everything else is in order, you might not be using the right type of fuel – some fuels burn cleaner than others and thus produce less sooty emissions. Whatever the reason may be, if you’re determined to get your diesel rolling coal, consult with a mechanic or engine tuner who can help you make the necessary adjustments.


If you’re looking to make your 6.7 Cummins roll coal, there are a few things you can do to make it happen. First, you’ll need to install a tuner and exhaust system that will allow your truck to produce more smoke. Next, you’ll need to adjust the settings on your tuner to create more fuel combustion and smoke production.

Finally, you’ll need to fill your tires with nitrogen to help them create more friction and smoke when they hit the road. With these simple steps, you can have your 6.7 Cummins rolling coal in no time!

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