2014-Present John Deere 5R-8R Tractors Reflash

Tier4B Reflash and Horsepower Tuning 

We can ship anywhere in North America in 1 business day
Includes 1 year software warranty 

Engine Control Module must to be shipped to our location for bench flashing with a turnaround time of 3 days. Contact sales@reimertuning.com for more information.
Note: Items with expedited shipping ordered after 12 ET will not go out until the following day. 

Please take a minute to review our position on Over the Air (OTA) updates. 

Horsepower Options: 
Custom Tuning: Up to +30% increase in horsepower

Application List:

In need of more power? 
This is a question that we get asked quite often. If you are in a situation where you feel like the machine you have is lacking in the horsepower department, we can help! When it comes to horsepower increases, the best way to explain it is that we are making the engine more efficient. It produces more power, sooner. When operating the equipment, it will take less load on the engine to get up to speed. This reduced the overall load on the engine, and as a result reduces the amount of fuel required. If there is a situation where more power is needed, you’ll have the extra horsepower available to you! It really is the best of both worlds. 

What is an EGR System, and why remove them?
Exhaust Gas Recirculation (EGR) is a method that is used to control Nitrogen Oxides (NOx) emissions. The purpose of this system is to return a small portion of exhaust gases back into the combustion chamber through the intake manifold. Lowering combustion temperature, resulting in a reduction of NOx emissions. The issue with EGR systems is that the valve can stick open due to carbon deposits. A worst case scenario is that the EGR becomes completely blocked, this will result in poor fuel mileage and a loss of power. When this occurs, it results in engine warning lights and the equipment going into limp mode. The vast majority of exhaust gas recirculation valves power off in the closed position. This means that once they are de-energized, they are in the shut position. On a few select applications, we offer block off plates. These plates are used as a fail safe, to ensure that there is no exhaust coming back into the intake system. 

What is DEF, can I stop using it?
DEF (UREA), or diesel exhaust fluid is a liquid that is injected into the exhaust system. This part of the exhaust system is called the SCR, or the selective catalytic reduction. It is designed to remove nitrogen oxide emissions from the diesel engine. The issue with DEF is that because it is 67% water, it can freeze during the winter. This can crack the DEF tank and lead to other problems. Some manufacturers use DEF as their main, or only, source of emissions control. This can result in high costs, ensuring that the DEF is always full. The catalyst that is used for the DEF is not as restrictive compared to the diesel particulate filter. This means that it can stay in place, even after a reflash has taken place. We recommend that you rinse out the DEF system with water after the fluid has been drained. DEF if left alone for a long period of time can crystalize. That is why it is best to make sure everything is clean!

Reimer Tuning is proud to be owned and operated in Canada! We have been around since 2014, and we are excited to work with you! Please feel free to reach out to sales@reimertuning.com if you have any questions.