Does LLY have EGR?

Introduction: The 2004.5 and 2005 Duramax LLY engines are physically identical. All engines utilize a cooled EGR (exhaust gas recirculation) system, catalytic converter a.k.a. soot trap, and a closed crankcase ventilation (a.k.a. PCV) system.

Will EGR delete throw a code Duramax?

Registered. If you have an FE9 truck and block the EGR it will not throw codes. If you actually delete and unplug everything it will throw codes.

What is an EGR blocker?

A vehicle’s Exhaust Gas Recirculation (EGR) system reduces the amount of emissions released into the atmosphere. Blocking the EGR will result in an increase in emissions as well as problems with the engine and exhaust system.

What problems do LLY Duramax have?

The most common issues LLY owners encounter include decreased fuel mileage, overheating and poor turbo response. These symptoms result from the inlet mouthpiece of the Garrett turbocharger having to fit into a smaller engine space.

How do you tell if a LLY Duramax has been deleted?

If you want to know if your deleted or not, you can do one quick check. Go to your tail pipe and if there is no black soot you are not deleted. If there is black soot you are probably deleted.