EGR Blanking Facts

Below are some FAQ and some pictures of some intake manifolds showing the soot and carbon build up from the EGR system. There is more than one reason to blank off the EGR pipe 1) performance, 2) Reducing air intake temps, but you can see that even just to stop the carbon build-up in the manifold, (which the manufacturer hopes will not cause issues UNTIL AFTER your warranty expires), it is a great mod to do.

In the pics below you can see the excessive build-up of soot. Both vehicles had less than 90,000kms. First pic is from a ML Triton. Second pic is from a 200 Series Land Cruiser.

FAQs

Q. What is an Exhaust Gas Recirculation (EGR) valve?

A. The EGR valve controls a passageway between the intake and exhaust manifolds. When the EGR valve opens, exhaust gasses flow from the exhaust manifold through the valve and into the intake manifold, keeping NOx emissions within state limits.

Q. Why block off the EGR supply port?
A. These hot, oxygen-depleted, exhaust gases displace (dilute) the cooler incoming oxygen-rich air and has a quenching effect on combustion and combustion temperatures. This reduces engine performance and raises intake air temperatures dramatically.

Q. What are the benefits of blocking the EGR passageway?
A. Many.
1) Cooler intake air temps.
2) More performance.
3) Less engine oil contamination.
4) Cleaner engine oil means increased engine life.
5) Cooler exhaust temps.
6) No Soot in intake which keeps vacuum / boost lines clean

Q. What are the negatives of blocking the EGR passageway?
A. It is against the law to change the way the vehicle’s emission control systems function. However, the upside … there is no road side diesel testing unlike petrol vehicles. The emission test occurs at time original engine certification. But as usual, we leave it up to the customer to decide if they are comfortable with this mod. We can safety state tat we have sold DPF eliminators to Dealers [whom wish to stay anonymous ]