Can DEF system be bypassed?

If you're thinking of bypassing any of your diesel's emission controls, remember that that it's highly illegal and the fines can be steep. The chances of getting caught may be low, but the consequences are costly.

Can a DEF system be removed?

Some diesel owners are opting to “delete” these pollution-control components instead. A diesel delete involves taking out the DEF system, removing the catalytic converter and DPF, and installing a new exhaust. The vehicle's ECU (engine control unit) will also have to be reprogrammed using a tuner.

What happens when you delete the DEF system?

A DEF Delete Service for your Cummins, Duramax, or Powerstroke diesel engine from Revolution Motors will remove this system so your truck is running at peak efficiency and performance. Trucks with the DEF delete install can improve fuel efficiency by up to 30%.

What happens if you run a machine without DEF?

Your machine will not function without DEF, and you can face serious consequences from letting the DEF tank run dry.

What can I use in place of DEF?

DEF is urea or otherwise known as aqueous ammonia. Windshield washer fluid that contains ammonia will do in a pinch.

HOW TO BYPASS DEF YOURSELF? EASIEST TRICK TO SAVE ROAD SERVICE IF TRUCK SPEED DROP TO 5 MPH.

Where is the DEF level sensor located?

A DEF quality sensor is mounted on the side of the DEF tank. This sensor detects the Urea concentration in the DEF to confirm it is acceptable for effective dosing (approximately 32.5% Urea).

Can you run water instead of DEF?

Subject: RE: Anyone replace DEF with water? Water won't hurt the system but it will de-rate you pretty quick. ECM compares NOx values pre/post, if conversion is low it will start throwing codes and will eventually derate.

Can you drive a diesel without DEF?

The U.S. Environmental Protection Agency requires vehicle manufacturers to put measures in place to ensure that vehicles cannot run without Diesel Exhaust Fluid (DEF).

Can I put distilled water in my DEF tank?

Registered. Use one gallon distilled water, 1/4 cup baking soda, 1/2 gallon clorox, 1/2 cup granulated ammonia, mix for 30 seconds then add to DEF tank.

How much does it cost to delete DEF system?

Prices and service times vary on the type and year of the unit and the extent of the delete but roughly range from about $3000 to $10,000. This cost is often either the same or less expensive than replacing the after-treatment systems upon failure.

Is it good to delete DEF system?

Deleting your DEF system can help save you money. Plus, your exhaust might have a bit of a beefier growl once you're done. DPFs are completely different. Also known as diesel particulate filters, these little buggers are exhaust filters installed in-line on your exhaust system.

Are DEF deletes illegal?

There is no way around this; it is 100% illegal to tamper with or modify the emission system on your truck in any way. It isn't a state or local law (although those exist, as well), but Federal law.

How much does it cost to delete DEF on Duramax?

Deleting the LML DPF requires a delete kit and a tuner. Delete kits run from $300 for a base kit to up to $1,000 if you want to replace the full exhaust system. Adding a tuner is going to add another $700-$1,500 to the price tag.

Is it illegal to delete the DEF system on a semi truck?

They're not. In the U.S., the EPA Clean Air Act prohibits anyone from tampering with an emission control device on a motor vehicle by removing it or making it inoperable. Canada has essentially the same law under a different name, the Canadian Environmental Protection Act. DEF tampering is illegal, yet it happens.

Is it legal to remove DPF?

It is illegal for drivers to use a car with the DPF removed, but it is not illegal for garages to take them out.

Does insurance cover DEF in fuel tank?

Unfortunately, your car insurance may not cover losses due to misfuelling. Most insurance companies do not include coverage for this type of engine damage or the costs of draining your fuel tank due to a mistake. However, it might be included if you have a high-coverage policy or mechanical breakdown insurance.

Do you have to put DEF in your truck?

A: Because almost all diesel-powered passenger cars and trucks built since 2010 are equipped with Selective Catalytic Reduction (SCR) and require Diesel Exhaust Fluid (DEF), it is readily available at most fueling stations and automotive parts retail stores. Truck stops often have a DEF pump right on the fuel island.

How do I make my own DEF fluid?

DEF is a mixture of (typically) 2/3 deionized water and 1/3 urea. It's carefully regulated by the American Petroleum Institute. Technically, urea is derived from one of the byproducts of urine. But it's synthetically made, so no cats are ever harmed in the production of the fluid.

Is DEF fluid made from urine?

Contrary to popular myth, cow and bat urine and DEF are not a thing. The urea used in the manufacture of DEF is synthetically derived from ammonia and carbon dioxide, and urea production plants are often adjacent to other sites where ammonia is produced, such as coal and natural gas refineries.

How many miles will 1 gallon of DEF last?

Most DEF tanks require one gallon of DEF for every 50 gallons of diesel fuel, and one gallon will generally last between 300 to 500 miles.

How many sensors does a DEF system have?

First, Diesel Engine Fluid (DEF) sensors are 3 sensors put into 1 apparatus. The DEF level, quality, and temperature are all read via the DEF sensor. For most tractors they are also the source for derate messages these days.

What causes the DEF light to come on?

When the level of diesel exhaust fluid reaches a critical level, your vehicle's computer will turn on the associated warning light. The DEF light will continue to illuminate until you refill the fluid's container.

Why is DEF so expensive?

Because of its high content with urea, and the higher quality of urea it takes to manufacture DEF, the prices of urea most often drive the cost of DEF. According to Jobbers World, the price of urea reached $442 a ton in June, up from $380 a ton in May.