Diesel Tuner's Blog

High Flow Vanes (HFVs) For Variable Geometry Turbos and Why You Need Them

[fa icon="calendar'] Dec 3, 2022 10:19:00 AM / by Ben Lawson posted in Turbo, Stealth, High EGT's, LML Turbo, Turbo Upgrades, Stealth VVT, Stealth 67G2, L5P, VGT, L5D, Nozzle Ring, High Flow Vanes, Turbo Vanes, HFV

[fa icon="comment"] 0 Comments

One of the biggest advancements in turbo design since we first started applying them to diesel engines over 70 years ago has been the invention of Variable Geometry Turbos. These turbos utilize a set of movable vanes on the inside of the exhaust housing that allows the actuator to vary the area in which exhaust gasses can pass through them. This allows the exhaust side of the turbo to increase or restrict the flow of exhaust hitting the turbine wheel. In some designs it also changes the flow direction of gasses hitting the exhaust turbine as you can see illustrated below.

When restricted, the velocity of the exhaust gasses increases which helps spin the turbine faster than a fixed geometry turbo would. This gives the turbo the ability to spool the turbine and compressor wheel up much better than it normally would even with a low volume of exhaust pressure traveling through the system. This helps to spool the turbo at lower RPMs to create boost where it would normally be lacking. This is why variable geometry turbos (VGTs) are such an advancement. They have the ability to significantly reduce turbo lag and provide much better response and turbo efficiency across a range of RPMs.

Do Your LML Tunes Protect You From High EGTs?

[fa icon="calendar'] Feb 21, 2018 1:00:00 PM / by Paul Wilson posted in EGT, High EGT's, LML Performance

[fa icon="comment"] 0 Comments

LML SPADE & Smart EGT Control:

Exhaust Gas Temperatures (EGTs) give you an insight as to how much stress you are putting your engine under. It is the most accurate way to monitor if your current activity is safe for the engine.

In a factory tuned truck high EGTs would most commonly be a sign of a physical problem like a boost leak. However, a tuner added to an aggressive driver could result in EGTs beyond the desired limit.

Most examples of this also include a mismatch of your tune level and truck operation. Such as the guy towing in his race tune.

The LML SPADE by DuramaxTuner.com now includes a Smart EGT Control feature.

Let your tunes manage the EGTs so you can keep your eyes on the road
Have peace of mind that your truck is safe
Get the power you need from your truck without sacrificing reliability

How Tractors Measure EGT's?

[fa icon="calendar'] Mar 27, 2017 2:24:00 PM / by Paul Wilson posted in john deere, case, new holland, Tuner for Combine, case ih, tractor tuner, combine tuner, tractor tuning, combine tuning, tractor, Combine, Tuner for tractor, Tuner for John Deere, Tuner for Case, EGT, High EGT's

[fa icon="comment"] 0 Comments

How Tractors Measure Exhaust Gas Temperatures

Have you ever noticed that some OEM's do not install an EGT (exhaust gas temperature) probe on the manifold? Any performance diesel gear head will tell you it's the best place to measure EGT's giving you the most accurate insight to any immediate stress on the motor.

Spiking EGT's in the manifold could be a symptom of many different problems including low boost, failing injectors, airflow restriction, EGR failure, etc. All of these failures signify a lit fuse that ultimately ends in engine failure if left unchecked. Clearly it's important to monitor EGT's, right!?

The problem with installing a probe from the manufacturer stand point is the life expectancy of the probe. Seeing extreme temperatures and still measuring accurately for the life of the service life requires high quality probes (read: expensive).

Never fear, manufacturers have come a long way in measuring temperatures (and cutting costs). In fact many feel no real need for a probe favoring a dynamic EGT model instead.

Calibrated Power Blog

High Flow Vanes (HFVs) For Variable Geometry Turbos and Why You Need Them

Do Your LML Tunes Protect You From High EGTs?

How Tractors Measure EGT's?

High Flow Vanes (HFVs) For Variable Geometry Turbos and Why You Need Them

Do Your LML Tunes Protect You From High EGTs?

How Tractors Measure EGT's?

Subscribe to Email Updates

Lists by Topic

Posts by Topic

Recent Posts