Diesel Tuner's Blog

Too often trucks come into our shop experincing high EGT's, turbo lag, excessive smoke output, and bad fuel mileage which are all symptoms of a boost leak. It is so common to develop a boost leak that we now require all trucks to have a leak down test done prior to strapping them down on the dyno. What's funny is, most truck owners that we do identify boost leaks on never even knew they had one. The reality is that even if you can hit peak boost, you may have a leak, especially if you have a variable vane turbo. Variable vane turbos will change vane position and other operations to try to compensate for the reduced level of boost pressure in the intake system. Leaving you driving around without an idea that your turbo efficiency has taken a hit. 

3 SIMPLE THINGS YOU CAN DO TO HELP KEEP YOUR LML DURAMAX RELIABLE:

Your truck is generally one of the largest investments you will make, so keeping it on the road is priority number 1!

The LML Duramax is one of the best trucks GM has ever produced. With 397 Horse Power and 796 ft/lbs of torque from the factory, the truck has the power plant necessary to do just about any job you can throw at it. However, despite the massive improvements the LML has brought to the table, there are some all too common pitfalls that can make this beast a burden. 

Here are some other places you can read more about the LML Duramax:

• LML Duramax SPADE
• Truck Trend Review of LML Duramax

• The LLY Duramax  is a great truck from the factory for there are 3 modifications every owner should make! The LLY was manufactured 2004.5 and 2005. There are a few 2006 models that are labeled as an LLY, however they have all of the LBZ upgrades from the factory, so for performance applications consider those an LBZ. An LLY was the first Duramax with the injectors outside of the heads, a variable vane turbo and a 50 state EGR.