Posts Tagged ‘increase diesel fuel mileage’

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.


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


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!


Diesel Power Fuel Mileage Tips Continued

December 5, 2008

So the suspense has built up long enough, its time we finally give you the rest of the secret diesel fuel mileage tips  that Diesel Power Magazine ran in their October 2008 issue.  Over the next couple of days we will cover some of our own diesel performance centered fuel mileage increasing methods as well, so be sure to check back for them. Let’s get on with the tips to increase your diesel fuel mileage!

23.  Don’t Keep Tank Full: Remember that diesel fuel weighs about 7 pounds per gallon.  Vehicles have a tendency to nickel and dime their owners to get some revenge make every pound count.  Remember the straw that broke the camel’s back.

24.  Remove Front Drive shaft: This easy modification drops the vehicle’s weight.  It also makes for one less moving part on vehicles without lockouts.  When winter comes or if fuel prices drop, put it back on.

25.  Locking Hubs: Disconnecting the wheel from the axle with lockouts will improve .4 mpg.

26.  Live on the edge and ditch the spare: This option will come more real once run-flat tires become an option for consumers.  Still, tires today are so good the spare rarely gets used.  We would guess that 3 times out of 10, the vehicle’s spare tire doesn’t have air in it anyway.  In its place, have a few plugs and an old-fashioned hand pump.  Craftsman came out with a 19.2 volt hand-held air pump that inflates low-volume tires up to 200 psi.  As for plus, the ones from Napa are much better than the cheap ones.  there is a big difference.

27.  Look to racing: Now is the perfect time to upgrade to fiberglass fenders.  Why stop there when you can spring for a carbon fiber hood?  With fuel at the prices they are, one can’t afford not to.

28.  Lexan:  Replace as much glass as possible, although be sure to leave the windshield alone.  Imagine what would happen in every pickup and SUV would replace just one piece of glass with this welterweight material.

29:  Aerodynamic Tricks: Air dams and tire skirts push air away from un-aerodynamic areas.  Early Broncos and many other cars from the ’50’s and ’60’s used tire skirts.  With everyone’s attention focused on fuel consumption, we might see this retro styling return.

30. Manual Trans Swap: When shopping for a used truck, avoid three and four-speed automatic transmissions and seek out five and six-speed manuals, so your engine can stay in its torque peak.

31.  Radiator Relocation: The mud bogging crowd has done this trick.  With the radiator by the tailgate, the front could be totally blocked off.

32.  Diesel Reinforcements: Propane, compressed natural gas (CNG), and hydrogen are alternatives in supplementing diesel.

33.  Remove all traces of the air conditioner: This will make it cleaner under the hood and crate less load on your engine.  Many serpentine belt systems can be routed with the compressor removed; all that is needed is a shorter belt.

34.  Lower the truck: If you want big tires, get out the saw and cut the sheet metal.  Don’t lift your truck anymore than you have to.

35.  Fuel Connoisseur: Don’t fill up when the tankers are filling the tanks.  Let the fuel settle before putting it in your truck.

Alright, now I am just going to come out and say that the bulk of these tips are just flat-out retarded, if you are so concerned about increasing your diesel fuel mileage that you are willing to remove your A/C and cut your sheet metal instead of lifting your truck you should be driving a ’95 civic and definitely not a diesel.  Have any input? we would love to hear it.

Visit Parley’s Diesel Performance for all your diesel performance upgrades that will help you improve your diesel fuel mileage.


More Steps to Increase Diesel Fuel Mileage

December 2, 2008

Alright, so once you have gained some self-control and begun to strictly check your tire pressure and speed, you are now ready for some more tips to help you increase diesel fuel mileage.  (If you are too into diesel performance and can’t seem to lay off the pedal, we know how you feel; maybe increasing fuel mileage just isn’t for you!)

6.  The most efficient drivers get about 30% better fuel economy than the least efficient drivers.

7.  Aerodynamic treatments can reduce the horsepower required to move the truck by 30 to 35 hp.

8. Every truck does not have to be fitted with all the aerodynamic features available.  For example, if the vehicle is only used for local deliveries, it does need air dams designed for highway use.

9.  Every 2% reduction in aerodynamic drag results in approximately 1% improvement in fuel economy.

10. The rpm level where the engine cruises can provide critical fine-tuning of fuel economy.  To do this, you can spec the axle gearing so that the engine runs at its torque peak.

11.  All oil thickens at low temperatures, causing increased fuel consumption.  Synthetic oil is less affected by temperature, thus making it more fuel-efficient.

12.  Tires flex more at higher speeds.  This leads to more friction, higher tire temperatures, and reduced fuel economy.

13.  Rolling resistance results from the internal friction of a tire as it deflects (flexes) during motion.  Energy spent generating heat in the tires is energy that does not contribute to moving the vehicle.  Cooler running tires are more fuel-inefficient than tries that run hotter.

14.  Air conditioner power demands are relatively small compared to the cooling fan, but every little bit helps so driver with the A/C off.

15.  Exceeding the recommended engine oil levels can lead to significant oil churning.spin losses, resulting in reduced engine efficiency and mpg.

16.  It takes between 10 and 70 hp to driver the cooling fan so cooling system maintenance can have a significant effect on fuel economy.

17.  A tire that is misaligned only 1/4-Degree from straight will try to travel 10-15 feet sideways for each mile, resulting in lower fuel economy.

18.  Selection of the appropriate drive train components is critical to achieving driveability and mpg goals.  Direct-drive transmissions can yield a +2% advantage in mpg from lower-gear mesh losses and lower spin/oil losses.

19.  Road roughness can increase rolling resistance up to 20% due to energy dissipation in the tires and suspension (10% loss in mpg).  The best surface for fuel efficiency is polished concrete.

20.  For every 10 mph of headwind or crosswind, mpg is reduced by nearly 13%.  You cannot escape increasing wind resistance.

21.  A list of behaviors exhibited by drivers that consistently obtain good fuel economy:

  • High percentage of trip distance in top gear (90+% recommended)
  • High percentage of distance in cruise control
  • Minimum service brake activity
  • Minimum percent idle/PTO operation

22.  Michelin is offering a new X one tire for tractor trailer rigs.  Replacing the dual-tire setup with one extra wide tire is said to increase fuel efficiency 5%.  A tractor with dual wheels has a total wheel and tire weight of 2,704 pounds, whereas when fitted with the wide X Ones, the total weight is only 1,963 pounds.  The X One tires turn much easier than a set of dual wheels because the dual wheels are fighting each other anytime they are not going perfectly straight.

Well we’re almost there, you now have 22 out of over 35 ways to increase your diesel fuel mileage.  If you have any of your own please be sure to let us know.


35+ Ways To Increase Diesel Fuel Mileage

December 1, 2008

Whether you are into Cummings performance, Duramax performance or Powerstroke performance or just diesel performance in general, with the economy and fuel prices the way they are we are all looking to save a little money at the pump.  Diesel Power Magazine recently ran an interesting article talking about 35 ways that International recommends to increase diesel fuel mileage.

  1. Break In Those Tires – A worn tire is about 7% more efficient than a new tire.  The break-in period for tires is between 35,000 and 50,000 miles.
  2. Check Your PSI – Every 10 PSI that a tire is under inflated reduces fuel economy by 1%.
  3. Know Your Tire Facts – Tires make the biggest difference in mpg below 50 mph.  Aerodynamics is the most important factor over 50 mph.
  4. An Idle Mind – idle time is costly.  Every hour of idle time in a long-haul operation can decrease fuel efficiency by 1%.
  5. Check Your Speed – Above 55 mph, each 1-mph increase in vehicle speed decreases economy by 0.1 mpg.

Now, you didn’t think we would give you all of these fuel saving tips all at once did you?   You might notice we didn’t try to sell you on any of our diesel performance products in this first post, that is because these first tips can be performed with things that you already have, minus the discipline to drive 55 everywhere you go.  So your homework assignment over the next few days is to apply these principles and check your increase.  Then come back for more tips.


How To Increase Diesel Fuel Mileage!

March 27, 2008

As of late we are getting a lot of people asking how to increase diesel fuel mileage.  With diesel over $4.00 a gallon and expected to go well over $5.00 a gallon this summer its no wonder why people are wondering how they can increase diesel fuel mileage.   Here are the things we have found that work best to increase diesel fuel mileage:

Diesel Performance Chip: Using a diesel performance chip is one of the easiest ways to increase your diesel fuel mileage, usually with about ten minutes or so spent installing a “chip”, you can increase your fuel economy by 1-5 MPG.  Some companies have actually released chips dedicated to increasing diesel fuel mileage including the Edge Mileage Max, Hypertech Max Energy and Quadzilla Max Mileage.

Diesel Performance Intake: Usually if you have already added a chip the next best thing to help increase diesel fuel mileage.  Diesel performance intakes allow your engine to breathe easier, which will help increase diesel economy.  You will usually see a 1-4 MPG increase.  Some of the best known performance intake manufacturers are S&B Filters, AFE and Airaid.

Water Methanol Injection: Now most people would recommend going with an exhaust system for your third mod to increase fuel economy.  We have found that when it comes to bang for your buck, the Snow Performance Water Methanol Injection Kits lower exhaust gas tempratures more and increase diesel fuel mileage better than an exhaust system.

If you have any further questions on how to increase diesel fuel mileage please contact us.

For any of the above upgrades, or for all your diesel performance part needs, please visit Parley’s Diesel Performance.


Snow Performance Water Methanol Injection = Increase Diesel Fuel Economy

January 11, 2008

We just got off the phone with Snow Performance and they had some great news.  They have been re-mapping their Stage-3 Water Methanol Injection System so that not only will it add big power on the high end but they are adding injection on the low end.  What are the results you ask? They are reporting that it will increase diesel fuel mileage by up to 2 m.p.g. with this new technique in addition to the extra power that you will see.  They will be sending us a kit this week so we are looking forward to getting to test it out.

Shop Parley’s Diesel Performance for all your diesel performance needs.

Hypertech Max Energy E-CON Economy Power Programmer

January 5, 2008

If you are wanting to increase diesel fuel mileage there has never been a better time than now to shop for a module that will help increase your diesel fuel mileage.  Recently Edge Products, Quadzilla Diesel and Hypertech Performance have released modules or tuners that are aimed at just increasing diesel fuel mileage.  With the increase of diesel fuel prices, these less expensive modules are paying for themselves quicker and quicker.

Shop Parley’s Diesel Performance for all your performance diesel part needs.

%d bloggers like this: