Fass Fuel System

Iron pony do you have the fass feeding a davco? And what type Engine and truck?

 

The FASS was installed by Pittsburgh Power, feeding inline from the fuel tanks into the stock fuel filter assembly. '09 Cascadia, DD15. The gain comes from getting dissolved air out of the fuel.

 

Ironpony, I am not scoffing at anything. If the results you have seen are there, then great. In fact, I salute your results. My contention is that it is on one truck. I NEVER base a decision to do something base on the result one or two guys get. Especially when their truck is a different truck, engine and drive train combination than mine is. We don't run the same terrain and haul the same loads all the time, Similar idea that what works on a Vette, may not be the best mod for a Silverado pickup.

I need to see consistent results from a study of many, many trucks, across a varied range of engine and drive train platforms. All I see thus far is anecdotal evidence that I do not see being repeated consistently across the spectrum. This is similar to the one armed bandit thing that people will use to show that one oil is "slicker" than another. There is a way to skew the results to play into the person's favor in showing one product is better than another.

https://www.youtube.com/watch?v=VC_OKiI-600

Yes, Ironpony, your results are anecdotal. Look the word up in a dictionary. Your truck was not part of a double blind study and comparison with other units in a controlled setting, with comparable engine and drivetrain specs, using the same exact fuel from the same stock for the entire testing period, with all trucks covering the same terrain throughout the testing period under the exact same weather conditions, grossing the same weight throughout the testing period, and variables that are not part of the testing that can influence the results. Don't confuse the word anecdotal with you being a liar. It doesn't mean that. It means that it is just one truck, one situatation, and not done is a controlled scenario.

 

I'm intelligent enough to understand the difference Cowpie. If I didn't, I should be suing the University of Colorado. There's a large enough installed equipment base on Series 60's that one wouldn't need to worry about not seeing a performance increase. If one had any doubts about its efficacy, a call to Pittsburgh Power and Bruce Malinson would probably take care of it. I certainly understand ones reticence involving after market modifications... its not like there aren't a dozen snake oil salesmen to every product that provides a real result.

My educational and professional background (before I ran off to be a gypsy trucker) was in engineering and product development. No one outside of medical device manufacturing does testing to the level of thoroughness that you describe. Its not cost effective. However, my experience with this product satisfies me, and I've more than recouped my costs.

 

Years ago GM had a system that was suppose to bleed off any air to the system off the secondary system. This was in the 1970's, they was so impressed with themselves about how it would remove the air in the fuel induced by the pump and angled fittings. We had a unit on the dyno, it was out framed, they were running it, an 8V71, a bunch of white shirts came into the shop, wanting to see the operation they went into the dyno room and the one guy mentioned about the system and how it really worked, we use to run a unit for an hour then do a tune up, and run it for 2 more hours, It was near the end of the run, our fuel system was not made for two return lines so we just had a hose going into the fill port. with a set of vise grips as weight so it would not come out. The dyno guy had it at full power, doing the numbers I took the vise grips off the fitting and clamped off the hose, it ran for 15 minutes and I asked him if there was any change he showed me the numbers not one thing changed. When the white shirts asked about the system and I showed them the numbers. and explained what I had done they just left.
In the 41 years as a licenced mechanic I have seen things that sound real good but do nothing, adding extra pumps, and filter sounds great, it is just another system to give you problems.
There is a very good saying KEEP IT SIMPLE STUPID. The Davco system is as simple as it gets.
There are hundreds of additives that have been proven BS, and all kinds of fuel system modifications that are BS Fass, is one of them.

 

I have a FASS. I wired it to switch on the dash. If it's off I can tell as the engine feels lazy. Before I installed it I had trouble with fuel waxing when cold. I was going to run coolant through it but found that it was not needed. The pump seems to be able to push waxed fuel thru until it warms up. At least I've never had cold fuel issues since.

 

I was just curious but, could a FASS or Airdog system act like a band-aid of sorts for an underlying fuel system problem. Maybe by supplying added fuel pump pressure it masks a fuel delivery deficiency that the factory system is experiencing.

 

You're wrong.

 

Absolutly
Most trucks have some fuel problems. Just listen as you walk thru the truck stops. Most guys think its normal for a diesel engine to not idle smooth but they should if running right.
Only the older air dog system raise fuel pressure because having an electric pump and all pumps work better pushing fuel vs pulling fuel but the mechanical engine pump has to pull full. This principal is why on cars they started putting electric pumps in the tank and no longer needing one at the engine.
Some trucks like mine (long wheel base) the engine has to pull the fuel approx. 16 feet. That cuts down on the mechanic pump dramatically when starting and under heavy pull.

 

Just ordered the 220gph fass will let you guys know the results after install. Any tips on the install on a 06 columbia with C15?