New Product Release: L5P Stealth STR Turbo
Calibrated Power was the very first custom tuner to tune the L5P Duramax platform and have been building custom turbos and tuning for over 15 years. We know exactly what these trucks respond to and need to get the best performance out of them. Now with their newest addition to the L5P performance market, the L5P Stealth STR. We've used what they have learned about the L5P platform to provide a drop-in stock turbo replacement that offers improved performance and reliability at a similar price to a stock turbo replacement. 

Here are the features: 

• Airflow that Supports 625hp with stock emissions in-tact
• Brand New parts and electronics
• Custom 7-blade extended tip billet compressor wheel
• Designed and spec'd with the help of tuning experts at DuramaxTuner

With the L5P being the newest Duramax engine on the scene it's also one of the best performing right out of the box. Making 400hp and 850 ft-lbs of torque when tested on our dyno. This iteration of the Duramax engine has been redesigned in all the right ways. From a thicker crank shaft, to a more advanced turbo, and pistons that can handle more load and heat than we've ever seen come in a stock Duramax engine before. Not only do we get improved performance but we also get an engine that can handle way more power than it left the factory with. Which means with bolt on upgrades alone you can raise the horsepower way beyond stock without having to do any upgrades to the internals of the engine. We've seen L5P's pushing up to 900ph on the stock internals. Even trucks still equipped with emissions systems can gain about 300hp and 500ft-lbs of torque with just a few bolt on upgrades. Today we will show you what upgrades you want on your L5P to make the biggest difference for the least about of money. So if maximum performance is what you’re looking to get out of your L5P this article is for you.

Here are the top four L5P upgrades!

• Tune

• Transmission

• Turbo

• Intake 

What's an RPO? Crucial Duramax Information!

This article will help you understand what an RPO is, how to find yours and when it will be needed.  An RPO or Regular Production Option is a GM-specific code, made up of 3 characters, that helps the manufacturer specify what configuration of options has been or needs to be applied to a vehicle. This can include anything from paint color to powertrain options. For Chevy/GMC Duramax trucks each type of engine can be signified by a different RPO code.

Do you need to delete your L5P DPF?

We've all heard from forums and numerous outlets that deleting your DPF system is the way to go these days. What we never see backing these claims is data and tests. There is plenty of personal stories around a failed sensor or even the occasional DPF failure. However, once data starts fueling the debate on whether to delete or keep your emissions intact you may change your mind of what to do. 

When it comes to modifying your diesel truck, we all know that tuning is the best bang-for-your-buck. Tuning is not magic, it is a science. It takes time to understand all the intricacies and tables that come with it. All tuning is about is recalibrating your factory ECM, with that we’re able to work with factory parameters and modify them to what your custom tuning needs.

We know you 2017 - 2020 L5P owners have been beckoning for an actual turbo upgrade, well we have one for you today!

It's what every Duramax lover is talking about right now!

As you’re well aware the L5P Duramax is all diesel enthusiasts are talking about right now.  It’s not unwarranted though as tuning is slowly becoming more an actual thing rather than a hope.  Now that HP Tuners have unlocked the possibilities, Duramaxtuner is wanting to know more.  While getting there hands on the ECM and doing intense R&D.  It would be a good thing to discuss what exactly comes with the L5P. 

If you’ve been following the Duramax world, you know that these trucks change every few years.  The LML ran from 2011-2016 and gave way to this new truck, the L5P.  The new L5P comes stock with higher horsepower numbers than it’s predecessor, but what exactly is different with this Duramax?  Let’s take a look at three major components this truck brings to the table.

2017 & 2018 L5P Duramax Tuning Updates:

You're reading this because you're interested in L5P tuning. We know you have been waiting for details and we are doing our best to keep you in the loop with factual information. 

(BTW, we released this info yesterday 9/17/18 to those on our L5P Tuning Wait List.  Join the wait list by clicking the link below and submitting the short form.)

There is going to be a lot of hype in the coming weeks about L5P tuning.  People want to know what are the benefits, costs, process and every other detail about this new tuning product.