Here’s How to Straight Pipe a Truck

You’re here because you want to know how to straight pipe a truck.

Let’s find out how to straight pipe a truck and the possible ways to do so. 

How to Straight Pipe a Truck: The Essentials

Straight piping a truck or car means eliminating the exhaust’s performance limits so that the engine’s gasses can flow better. 

This is often done by removing only the muffler or the muffler and converter together and replacing them with a straight pipe.

Straight piping increases engine performance as more airflow can flow through. This also causes the truck to be much louder since there is no muffler to reduce it.

You can straight-pipe your truck’s exhaust with and without welding. Let’s take a look at both in the following section.

Two Ways How to Straight Pipe a Truck

No matter which method you choose, these are the preferred tools that you should have to successfully straight pipe your truck:

  • An angle grinder;
  • An electric or cordless drill with screwing capabilities;
  • A hacksaw;
  • Different size wrenches;
  • A measuring tape and pencil;
  • A caliper (optional);
  • Gloves, eyes, and hearing protection.

Straight piping a truck without welding

If you decide to straight pipe your truck without welding, then these are the materials that you will need:

  • A pre-formed straight pipe exhaust kit (recommended);
  • U-bolts, band clamps, or flex pipe.

We recommend using a pre-formed kit when straight piping without welding because using a universal kit often requires a welder.

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01/16/2023 02:28 pm GMT

Here’s how to straight pipe a truck without welding

  1. Measure the diameter of the exhaust pipe with a caliper or tape measure so that you know which straight pipe kit to purchase (measure the inside and outside dimensions of the pipe).
  2. Depending on the kit, cut the pipes at the converter or the muffler of the exhaust system using an angle grinder.
  3. Measure the length of the straight pipe and cut it to size.
  4. Attach the pipe to the truck’s exhaust manifold on the inside or the outside, depending on the kit.
  5. Use U-bolts or band clamps (depending on your preference) to tighten the two pipes together using a proper-sized wrench. Band clamps are a better solution because they tighten across a wider area, providing a better seal.
  6. Lastly, attach the straight pipe exhaust to the bottom of the truck using the indicated holders.
  7. Optional: If you have to connect two pipes at a bend, you can use a flex pipe, which works great, is long-lasting, and can be attached using U-bolts.

Straight piping a truck with welding

You can easily straight pipe your truck with a welding machine if you have one. If you choose this method, we recommend using a universal straight pipe kit, which you can adapt to your specific truck in any way you need.

Here’s how to do it with welding

  1. Depending on the effect you want to achieve, remove both the converter and muffler or just the muffler by cutting them away with an angle grinder.
  2. Measure the distance from the place you cut to the truck’s rear using a tape measure.
  3. Plan the layout of the pipes, making sure to adapt them to any bends. This is why a universal kit is ideal, as it provides versatility in pipe thickness and length.
  4. After cutting the pipes to the correct measure, attach them to the exhaust manifold and weld them together with a welder.
  5. Lastly, attach the exhaust pipes to the appropriate hanger under the truck, either by welding them or using special hooks.

Why Would You Straight Pipe a Truck?

Straight piping a truck is beneficial, but it also has its downsides. Let’s take a look and analyze both of them.

Pros

  • Increased performance – By giving the exhaust gasses a chance to exist faster from the engine, its overall power and torque are increased
  • Decreased fuel consumption – Removing the muffler and converter lowers the back pressure to the engine, resulting in easier operation and less fuel consumption
  • Lightweight and easy to maintain – With fewer parts installed, the extra weight is removed, making the system much easier to maintain.
  • With no converter and muffler to dampen the sound, the engine operation becomes louder (this is why some people straight pipe a truck, making it a “pro” for them, while it is a con for others)

Cons

  • Increased gas emissions – the converter’s role is to reduce the pollution caused by exhaust gasses and bring it down to a lawful minimum. Without it, the pollution caused is much more harmful to the environment
  • It may not be legal – many states have laws prohibiting the use of trucks and cars without suitable converters and mufflers. Laws may vary, though, so you should ensure that the state you live in has prohibitions of this sort

How Much Does It Cost to Straight Pipe a Truck?

The cost of straight piping your truck may vary, and it mainly depends on the type of kit you will use and whether or not you will install it yourself or have a professional do it for you.

If you choose a professional to install the kit, you should expect a labor cost of around $50-$200 per hour, depending on their skill and expertise. On the other hand, doing it yourself costs nothing, but you have to do the job right.

As for the type of straight pipe kit, universal kits are cheaper than pre-formed ones, and you can usually find a universal kit for around $200. 

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01/16/2023 02:28 pm GMT

Pre-formed kits are more expensive but usually involve easier installation and are of higher quality. You can find a good quality pre-formed kit for around $1,000, but some prices stretch up to $2,500 and more.

Frequently Asked Questions About How to Straight Pipe a Truck

Can I run straight pipes on my truck?

Whether you can run straight pipes no your truck or not depends on whether you’re looking for the technical answer or the legal answer. Technically, yes, nearly any truck can be made to run straight pipes. Legally, in many states and locations, it is illegal to run straight pipes on a truck.

How much is it to straight pipe a truck?

How much it costs to straight pipe a truck depends on if you do it yourself or hire a professional and if you use a universal kit or buy a pre-formed kit. Generally, it costs between $1,000 and $2,500 to straight pipe a truck.

What does straight piping do to a truck?

Straight piping a truck makes the engine work more efficiently and makes the truck louder, since the muffler and catalytic converter no longer exists.

Does straight piping a truck add horsepower?

Yes, straight piping a truck adds horsepower in most cases.

How long does a straight pipe last?

A straight pipe lasts the same amount of time as any other exhaust system you’d have on your truck, assuming you use equal-quality parts.

Is straight pipe street legal?

In many places, straight pipe is not street legal.

How long does it take to straight pipe a truck?

It usually takes between 30 minutes and 120 minutes to straight pipe a truck, depending on the vehicle, parts you’re using, and your experience straight piping a truck. If you’ve done many before, it won’t take you as long as someone who is doing it for the first time.

Can I replace my catalytic converter with a straight pipe?

Legally, you’re probably not supposed to — straight pipes are illegal in many places. Technically, yes, it is possible to replace your catalytic converter with a straight pipe.

Does straight pipe remove catalytic converter?

Yes, a straight pipe will remove the vehicle’s catalytic converter.

How much hp do u lose from straight pipe?

You shouldn’t lose any HP when you straight pipe a truck. In fact, you’ll likely gain HP.

Does straight piping make your truck louder?

Yes, straight piping will make your truck louder because it is removing the muffler and catalytic converter(s).

Is straight pipe loud?

Yes, straight pipe is loud.

Does straight piping a truck improve performance?

Assuming the truck is tuned properly, yes, straight piping a truck would improve performance.
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About Frank Diaz

Hi everyone, my name is Frank Diaz and I am the face behind GaragestPicks. I studied Mechanical Engineering at Georgia Institute of Technology and worked as a mechanic for over 20 years. I love working on cars and doing DIY projects around the house. I write this blog to share my knowledge and help others fix their cars with most common tools.

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