Archive for the ‘increase diesel fuel mileage’ Category

FASS Diesel Fuel Lift Pumps

May 14, 2012

Why should you consider installing an aftermarket diesel lift pump on your truck?  As diesel performance becomes a more and more mainstream part of automotive upgrading, we have conversations with many of our customers  each day about which performance diesel parts they should consider installing to get the fuel economy gains and power increases they want.  Knowing which diesel upgrades are critical from experience, even if we start off talking about diesel tuners, cold air intakes, exhausts, injectors, turbos and the like, invariably we steer the discussion to a product like a FASS Lift Pump.  Why do we always end up recommending a fuel pump, when many diesel trucks already have one in some form or other?  The answer is simple – there are several reasons.  Some so compelling, in fact, that we would feel like we had done our customers a disservice if we didn’t educate them.   Let’s look at some of  the most important.

FASS Diesel Fuel Lift Pumps1) It’s smart insurance – If you’ve ever paid to replace a set of diesel injectors, especially for a common rail diesel, you know that you can easily spend a few thousand dollars or more on a set.   A Fuel Air Separation System (FASS) lift pump can protect that investment by removing fuel contaminants like water, dirt, and air.  This protects the tip of your injection nozzles and your injectors.

2) Your truck will thank you with better performance – diesel performance is all about improving the combustion event.  Cooler air is denser, and more oxygen in the cylinder helps make more power.  Thus the popularity of diesel cold air intakes.  The better the purity and atomization of your diesel fuel, the better your combustion event will be.

3) Improved diesel fuel mileage – One of the most prevalent methods used to improve power and diesel fuel mileage today is a diesel performance chip.  And one of the most common methods performance chips employ to get greater gains in power and fuel economy is raising rail pressure.  A FASS fuel pump will give your injection pump the support it needs, providing a constant supply of fuel, and at  the correct pressure.  Whether you use a tuner or not, a FASS pump can give your truck’s fuel economy some real help.

For all these and other reasons, we feel confident recommending an aftermarket lift pump like those from FASS for every diesel truck owner on the road.  Visit Parley’s Diesel Performance to read more about the different types of pumps FASS offers, and to learn more about this important diesel upgrade.


AEM Cold Air Intake System for 1.9L VW Jetta & Golf TDI – Install Videos

May 2, 2012

In this two part installation video, we show you how to take the stock intake filter from your 1.9L VW Jetta or Golf TDI and replace it with an AEM Cold Air Intake.  Specifically, one that moves your intake filter out of the engine compartment and down into the wheel well, making it a true diesel cold air intake. Relocating the filter out of the stock location allows you to get cooler air inlet temperatures, and improved diesel performance is all about a better combustion event, achievable with a cooler, denser, more oxygen-rich air intake charge.

AEM diesel intakes come with DryFlow filters that are washable and reusable, and do not need to be oiled after cleanings, making them convenient to maintain.

One thing to be aware of though when moving the air filter down into the wheel well – if you drive through water deep enough to suck water in through the filter, you’ll destroy your engine.  To overcome this obstacle, the diesel intake engineers at AEM offer a bypass valve.  This bypass valve shuts down induction through the filter whenever the filter becomes submerged.  Intake air is rerouted instead through the external diaphragm of the bypass valve.

AEM Cold Air Intake Bypass Valve

We also recommend you add an AEM pre-filter to keep normal splashes of mud and water from saturating your intake filter.   The pre-filter is made of a durable micro-screen material and has been pre-treated with AEM’s proprietary hydrophobic process.  The combination of the pre-filter and the bypass valve gives you the protection you need.  Here’s a look at the pre-filter.

AEM Cold Air Intake Pre-Filter

Visit Parley’s Diesel Performance for all your VW TDI performance upgrades and diesel performance parts needs.


Smarty Tuner in a Common Rail Cummins

April 20, 2012

Just a few quick notes and updates on Smarty Dodge diesel performance tuners.  Currently, tuning is available on the 6.7L Cummins Ram trucks up through model year 2011.  Smarty is currently working on tuning and is expected to release that tuning for the 2012 Ram 6.7L Cummins pickups in the next few months.  At this time the only Smarty tuner that includes tuning for the 2010 and 2011 6.7L Cummins is the Smarty Junior tuner.  The 2012 release is going to be on the Junior platform as well.

Many of our customers want only the best Dodge diesel upgrades, and for that reason want to know if the new Smarty SSR is the “best” tuner for them.  It is important to note that the Smarty SSR is for custom tuning only.  If you don’t have access to a dyno and the time and patience to properly tune your Cummins engine, you’re doing yourself a disservice by purchasing the SSR.  It does not come with any pre-loaded tunes – you have to build your own.  And if you don’t know what you’re doing, it can be pretty easy to damage your diesel engine.

Recently wholesale distributors of Smarty DPF Delete tuning products (specifically the S-67 PoD  and the J-67 Junior tuners) made the decision to no longer ship these tuners out for sale with the dpf delete tunes installed.  What this means is that if you’re looking to use your Smarty as a DPF Delete race tuner, you still can.  You will, however, have to download the files from Smarty’s website.  Here’s a link to the Smarty DPF Delete downloads.  The process is a bit computer intensive, so if you’re not pretty computer savvy, we recommend you find a buddy who is to help you out.

If you have questions about Cummins diesel performance or Smarty tuners,  visit us on our website or give us a call.  Visit Parley’s Diesel Performance for all your diesel performance parts needs.


Choosing the Right Diesel Performance Exhaust System for Your Diesel Truck (part 1 of 2)

March 13, 2012

It’s widely known that upgrading your factory system to a performance diesel exhaust is a great way to increase your engine’s power and fuel economy.   Because of all the changes to stock emissions systems over the past few years, there now exists some confusion and questions among diesel owners as to which exhaust upgrade is the best option for them.   Parleys Diesel Performance wants to help you make an informed and educated choice, so let’s start by reviewing the basics.

Traditionally, light duty diesel truck factory exhaust systems were 3 inches or 3.5 inches in diameter, with crimped spots along the diesel exhaust system that hampered flow and robbed your vehicle of its true potential.   Installing a performance system to increase the diameter of your exhaust allowed your engine to expel exhaust gasses more efficiently, and mandrel bends gave your exhaust a true 4″ diameter.  Diesel trucks today come from the factory with catalytic converters, diesel particulate filters, even urea injection systems (also called SCR or selective catalytic reduction).  And 4 inch stock exhausts are commonplace.

Late Model Exhaust Diagram

No Def Defined

So which exhaust should you choose for your truck?

If you have a “pre-DPF” diesel pickup (anything before the 2007.5 6.7L Cummins, 2008 6.4L Powerstroke, or 2007.5 Duramax LMM) the most common diesel exhaust upgrade is a four inch turbo back exhaust system.  The standard 4″ diameter will meet most people’s needs; however, if it’s your intention to upgrade your vehicle to a high horsepower level (think over 550HP), we recommend you invest in a 5″ diesel performance exhaust system. This will allow the larger amount of exhaust your high horsepower diesel creates to flow properly and keeping temperatures down.

AFE 5″ Stainless Steel Turbo Back Exhaust System for 2004.5-2007 Dodge 5.9L Cummins

AFE Exhaust 49-42007

In addition to figuring out the diameter of the exhaust system you want for your truck, there are also some other important choices to make.  Diesel exhaust systems come in four main materials: T-304 Stainless Steel (high-polish show finish quality), 409 Stainless Steel , Aluminized Steel (similar to your original stock exhaust), and different variations of Black Stainless or Black Aluminized Steel.   You also need to decide whether you want to have a muffler or not, and if you do choose a muffler, do you want one that is a high flow performance muffler or one that keeps your exhaust volume low.  The majority of Turbo-Back Exhausts come with high flow performance mufflers.  If you want a “straight pipe” exhaust, meaning no muffler, a popular choice is the no-muffler series from MBRP Performance Exhaust.  Their stainless steel SLM (Stainless Less Muffler) and PLM (Performance Less Muffler – this is aluminized steel)  are very competitively priced and work great.

MBRP Installer Series 5″ Turbo-Back Exhaust For 2003-2007 Ford 6.0L Powerstroke


Although less popular, catalytic converter or Cat-Back Diesel Exhausts allow you to upgrade the sound and flow of your exhaust and in some areas are necessary to keep your diesel street legal.

Magnaflow XL Series Stainless Steel 4 Inch CAT-Back Exhaust for 1999-2007 Ford 6.0L & 7.3L Powerstroke


With exhaust systems from all the best manufacturers, Parley’s Diesel Performance can help you choose the proper diesel exhaust system for your truck.  Whether you choose to install a Cat-Back or a Turbo-Back diesel exhaust, or if you just aren’t sure and would like help deciding, contact us and we’ll help you make the right decision.  In part 2, we’ll help you choose the right exhaust system if you own a DPF-equipped diesel truck.


Want to increase your diesel fuel economy?

March 5, 2012

Fass lift pumps are a great way to increase your engine performance and diesel fuel economy by removing air and water from your fuel. It is well known that as your truck moves the diesel fuel in your tank is constantly in motion. This creates multiple problems with fuel delivery to your engine. While the injection pump draws fuel from the tank it’s creating a vacuum that produces fuel vapor and as the vehicle is in motion it creates fuel vapor that is mixed with the air. Resolve that issue by installing a FASS Lift Pump from Parley’s Diesel Performance and as a added bonus you will get higher power and reduce injector tip erosion. Typical No. 2 Diesel Fuel already consists of about 10% air. That issue is compounded by dirt and other debris that can be found in a diesel fuel tank. A FASS Lift Pump will address these issues head on by meticulously filtering out such problematic air & vapor (along with other contaminants in the fuel) before it reaches your truck’s injectors. Knowing about these latent dangers in the fuel at the diesel pump, can you really go on feeding it untreated to your truck? We at Parleys Diesel Performance strongly advise against it… and believe a FASS diesel lift pump is an excellent diesel performance upgrade choice. Get the most out of your diesel engine and your fuel dollar with a FASS fuel pump from Parleys Diesel Performance.



  • Removes AIR / Vapor from Your Fuel
  • Consistent Flow of Fuel
  • FASS Lift Pumps are Reliable High Volume Pumps
  • Increased Horse Power
  • Increased Torque
  • Increased Fuel Economy
  • Reduces Carbon Monoxide & Carbon Dioxide
  • FASS Lift Pumps have a LIFETIME Warranty on Most Applications
  • They have a 15,000 – 17,000 Hour Life Expectancy
  • FASS Lift Pumps equates to 700,000 Plus Miles
  • FASS Lift Pumps have Up to 260 GPH
  • The Pump offers 160 Maximum PSI
  • Its Motor Has Up to 406 OZ Inches of Stall Torque
  • FASS Lift Pumps have Interchangeable Filters


AFE Stage 2 SI Cold Air Intake Install Video: 2008 Ford 6.4L Powerstroke

November 11, 2011

Parley’s Diesel Performance carries all the top brands of diesel intakes and diesel cold air filters like those from Advanced Flow Engineering, or AFE as they are commonly called.  Over the past few years AFE diesel intakes have become recognized as some of the best cold air intakes available.   Many AFE cold air intakes have an open or exposed filter element, but for certain vehicle applications AFE has designed an intake system with a fully enclosed filter.  A good example would be the sealed Ford diesel cold air intake for the 6.4L Powerstroke trucks built from 2008 through 2010.

AFE’s Stage 2 Si ( sealed intake) for the 6.4L Powerstroke shows signficant improvements in airflow and real power increases.  Dyno testing of the AFE Stage 2 Intake shows gains of 28 Horsepower and 54 ft. lbs. of Torque at 2000 RPM.  That’s a pretty significant increase in power to a truck that already makes big numbers from just adding a cold air intake system.  The increase in airflow is also improved by 41% over the stock airbox, pushing an additional 65 CFM (stock is about 160 CFM).

The AFE Stage 2 Si intakes also help maintain a factory appearance by utilizing a fully sealed commercial grade air box that replaces the entire OEM air box.  Part of what makes this particular Stage 2 Si unit so effective is the use of a built in ram-air scoop which forces more cold air into the filter area.  And last but not least, like with all true diesel performance intakes, adding a large, conical filter with pleated ridges increases the surface area of the filter, allowing for more air to be filtered more quickly.


Diesel Power Digi PD Module Install Video: 2004 VW Jetta TDI

October 26, 2011

The Diesel Power Digi PD module from Diesel Power is a VW TDI Performance power module that increases fuel economy and horsepower in 2004-2006 VW TDI PD engines.  This diesel performance module will increase your horsepower and torque by 15-30%, is adjustable and depending on your driving style will increase diesel fuel economy by 2-4 miles per gallon.

Like all Diesel Power tuning modules it is made from quality components and backed with a full 3 year warranty.  Visit Parley’s Diesel Performance for all your diesel performance parts needs.


Diesel Power Digi CRBB Rail Pressure Box in a Common Rail Dodge 5.9L Cummins

September 28, 2011

Get improved diesel fuel economy and increase your horsepower and torque by up to 25% with the DieselPower Digi CRBB diesel performance module.  Sometimes called a rail pressure box, this module is one of the safest and easiest diesel performance parts to install.  It will work as an effective upgrade for improved Duramax diesel performance and Cummins diesel performance.


Dr. Performance Is Out Of Business – Now What?

September 26, 2011

Because we still get phone calls every day asking for information about Dr. Performance power modules, we wanted to let you know that they went out of business in the summer of 2011.  Questions we are most often asked include “How do I get warranty work on my Dr. Performance module that I bought a few years ago?” and “Do you know how we can get in contact with Dr. Performance?”  The unfortunate truth is that they are completely out of business, haven’t answered their phone in almost six months, and any repair work on a damaged or faulty Dr. Performance module at this point is impossible.

The most frequent question we hear from customers interested in a diesel performance module next is “Since Dr. Performance modules aren’t available, are there any other manufacturers of diesel power modules?”  Thankfully we can answer in the affirmative that there are several companies that make diesel performance modules that have the same beneficial characteristics that Dr. Performance modules had.  Some of the reasons Dr. Performance modules were so popular included improved power without increased operating temperature, they were great for towing, and they gave substantial diesel fuel mileage improvements.   They were also widely used as a trustworthy pressure box by diesel owners who wanted to “stack chips.” It didn’t hurt that the majority of them didn’t leave a footprint in the vehicle’s ECM because they were simply rail pressure boxes that uninstall quickly and cleanly from the rail pressure sensor harness.

Depending on the diesel truck you drive, we recommend a power module from two different manufacturers.  If you’re looking for improved 6.4L Ford Powerstroke performance, we really like the TS Performance Power Play MP-8.  On the 6.4L Powerstroke, the MP-8 is a fuel pressure only power module that adds up to 100 Horsepower and installs in just minutes by plugging in to a 15 pin fuel sensor connector.   Just like the Dr. Performance module, the Power Play MP-8 doesn’t increase your diesel exhaust temperatures and most users report gains of 2-4 mpg in fuel economy.

TS Performance Power Play MP-8

For common rail owners looking for improved Cummins diesel performance or Duramax diesel performance, the Digi CRBB Power Module from DieselPower has quickly become our favorite choice here at Parleys Diesel Performance.  Backed by an unheard-of 3 year manufacturer warranty and built from some of the best electronic components available, the DieselPower Digi CRBB is easy to install, doesn’t leave a “footprint” in the truck’s computer, can be adjusted quickly to any desired power level, and adds a decent amount of horsepower.

DieselPower Digi CRBB Common Rail Pressure Box

Because the Digi CRBB is a fuel rail pressure module it can be “stacked” with a Smarty programmer on the Dodge Ram Cummins diesels yielding loads of power that you almost have to feel to believe.  Operating temperatures are kept down, and if you don’t drive the truck like you stole it fuel economy can be improved significantly.    The Digi CRBB is also effective for “stacking chips” when using EFI-LIVE tuning on your Chevy or GMC Duramax diesel.  If you have any questions about these or other options for your diesel truck, call us and we’ll be happy to help.


2011 VW Jetta & Golf TDI Performance Power Module

July 13, 2011

Good news!  2011 VW and Audi TDI owners can now take advantage of their diesel’s untapped performance potential by installing a new DieselPower brand tuning module.  With a proven  20 year track record of quality engineering and diesel tuning, Diesel Power is a German tuning company that goes to great lengths to give diesel owners access to safe, useable power.

Their modules are made from high quality components.  The module itself is encased in a durable thick plastic box, and the electronics components inside are all aircraft grade.  The wiring harness and connectors are sturdy and built to last.  They  have so much confidence in their product quality that the TDI power module is backed by a full 3 year replacement warranty, the longest in the tuning industry.

2011 VW TDI Performance Chip

Diesel Power Module for 2011 VW & Audi TDI

The 2011 TDI  performance  module adds more power and better fuel economy by making minor but effective changes to the high pressure common rail fuel system on your TDI.  Much of the fuel economy gain is picked up by the improved low end torque the module provides.   The Digi CR increases horsepower and torque by up to 25%, and fuel economy gains are averaging 3-4 mpg.   Installation is simple and will take approximately 15 minutes.

This module will work on these vehicles:

  • 2011 VW Jetta 2.0L TDI
  • 2011 VW Golf 2.0L TDI

Make the most out of your new TDI and check out Parley’s Diesel Performance for all your VW TDI Performance needs today!



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