2nd Gen Non-Engine/Transmission FASS vs Air Dog????

[jraker]

Hello all,

Has anyone done a comparison between the FASS and the Air Dog System? From the outward appearences they seem about the same. However there is a $150 price difference between the two. Does anyone know what the Air Dog offers that the FASS does not. I know the FASS comes with a 10 micron filter but a 3 micron is available. The Air Dog comes with a 6. Is this the difference? How about the milage claim and HP claim the Air Dog makes? Is this really the case for the Cummins Engine? As always I appreciate any input. My LP is going south and I need to do something soon. WOT is at 2-3 :{ psi and cruise is 10-11. I never open her up anymore. I am forced to drive slow enough to drive Ms. Daisy.



Thank you,

Joel

 

[tcourse]

There is another option

How about a mechanical pump?

Check out the R. A. S. P. at:



http://www.dieseltrans.com/



TC

 

[rweis]

When I change mine if ever I am going RASP.



Bob Weis

 

[Murle]

I have been running the FASS now for 8 months. No problem and I really like the unit. As far as the AIR Dog. I believe that Wade Patton was given one free about 7 months ago. Either he has not tested his FREE unit or he has tested it and it did not meet his high opinion of the unit... ... Who knows!!!

 

[PRyker]

JRaker,



I had a discussion on here with Charles Ekstam of Fuel Preparator about the differences. Please read through this thread.



https://www.turbodieselregister.com/forums/showthread.php?t=108378



FOr me, it simply would not make sense to spend the extra $150.



Thanks



Phil

 

[rashwor]

RASP??? Could it be the ultimate solution? I sure like the sound of it!

 

[Wiredawg]

FASS is Great!

I have a FASS on my 3500 w/ about 4K miles on it. Engine quieter, 16 psi idle/15 psi WOT, 1. 25 mpg ingrease, stronger seat of pants feel. I believe this is becuse VP 44 has constant psi feeding it. I have a second one to install on my wife's rig next couple of months.



Can't say about the Air Dog.



Wiredawg

 

[GIT-R-DONE]

Fass

I have had the FASS for a little over 10,000 miles so far, no problem. Constant pressure about 13-14 lbs. If you look around some of the web sites , you can find deals on the FASS.



Air Dog, I dont know of anyone running it (as its fairly new) so I cant give you any first hand knowledge on it. I believe they are about the same, one is just more $$ than the other.



As far as horsepower/torque results, if you get any increase, consider yourself lucky. Been there/ done that.



I got my FASS to replace the junk Dodge gave us (lift pump). So far I am happy with it. The choice is yours to make. As some of the others here have stated, there are other systems out there to check into. So, check them out and ... ... Good luck.

 

[jcarey]

I've looked at the R. A. S. P pump, and it looks goods. One question though, wouldn't you lose the improved water/air removal benefits of the FASS or AirDog?



Jim

 

[PBayer]

For those who installed the FASS and Air Dog.

1. did you totally remove the factory fuel filter?

2. is there a replacement fuel line to fill in the spot between where the old lift pump was and the oem fuel filter to the VP44?

 

[GIT-R-DONE]

For those who installed the FASS and Air Dog.

1. did you totally remove the factory fuel filter?

2. is there a replacement fuel line to fill in the spot between where the old lift pump was and the oem fuel filter to the VP44?

Reply:

1. Yes I removed the factory fuel filter and lift pump. (sold it) I now wish I hadnt as "if" anything were to go wrong with the FASS system, I will need a back up to get home. I am now buying back the parts to put it back together, just in case.



2. Yes , it came with the replacement line

 

[rweis]

The whole point of feeding a diesel is clean lubricated fuel.



If you install a FASS or Air Dog or anything else, do you have adequate flow of clean lubricated fuel? If you have to run in the "backup" mode do you have adequate flow of clean lubricated fuel?



If you are going to all the changes and $$$$ to run an xxxx, to get adequate flow of clean lubricated fuel why are you putting all your eggs in one basket? If the "basket" goes down you have been had.



I think that is partially the emphasis of the RASP system. Conceptually sound like the FASS, Air Dog, etc, (although it is mechanical instead of electrical) BUT it will automatically revert to the OEM system if it (RASP) fails. It does not filter or remove air, however you certainly can filter somewhere else in the system (RACOR etc), and probably should not have all your eggs in one basket anyway.



FASS, Air Dog etc look like great systems, but what is the backup plan if the pump fails, filter clogs, etc. Do you carry a spare FASS with you?



Those of us still running the OEM ff & lp carry spare ff's and lp's as the backup plan, what's your backup plan?



Bob Weis

 

[JGheen]

The whole point of feeding a diesel is clean lubricated fuel.



If you install a FASS or Air Dog or anything else, do you have adequate flow of clean lubricated fuel? If you have to run in the "backup" mode do you have adequate flow of clean lubricated fuel?



If you are going to all the changes and $$$$ to run an xxxx, to get adequate flow of clean lubricated fuel why are you putting all your eggs in one basket? If the "basket" goes down you have been had.



I think that is partially the emphasis of the RASP system. Conceptually sound like the FASS, Air Dog, etc, (although it is mechanical instead of electrical) BUT it will automatically revert to the OEM system if it (RASP) fails. It does not filter or remove air, however you certainly can filter somewhere else in the system (RACOR etc), and probably should not have all your eggs in one basket anyway.



FASS, Air Dog etc look like great systems, but what is the backup plan if the pump fails, filter clogs, etc. Do you carry a spare FASS with you?



Those of us still running the OEM ff & lp carry spare ff's and lp's as the backup plan, what's your backup plan?



Bob Weis

He's got a good point..... aren't these FASS and AirDog systems designed for people running a lot of power that need a system such as those to feed the engine all that fuel?? I haven't had any issues with my current system(knock on wood) and would rather pay $160 for a new lift pump if needed instead of high dollar system like Air Dog or FASS. I have seen these systems at diesel shows and wasn't really impressed or understood any performance gain from them. Just MO

 

[Murle]

The main reason that I bought the FASS is so that I would not have to buy a 1500. 00 VP. when my lift pump was not putting out enough fuel but would still run. The original lift pumps are BAD news.

 

[Horsepuller]

I agree with rweis. I just purchased a 02' and after reading all the problems and solutions re: the LP, it seems to me the best and most cost effective solution is to just carry a spare LP and fuel filter. Fuel filters are just maintenance and shouldn't be included in the cost of this solution. So a LP can be had for $150. I can buy an awful lot of LPs for the price of a FASS or Air Dog or for that matter installing and buying a pusher pump. The OEM system performs adequately for my driving needs. I don't like the associated problems of adding a pusher pump either. I know that many have overcome the problems such as mainting no more than 16 lbs of FP and allowing for fuel to continue flowing if the pusher pump dies, but still to complicated for me.



Now I just run stock and have the necessary gauges (FP, EGT and Boost). If I was going for increased HP and really bombing the truck, I would improve and invest in the fuel delivery system, but for me it doens't make $en$e.



BTW: My lift pump has a 70k miles on it and no problems. And this truck pulls a trailer all the time. "Knock on wood"

 

[2ndgen2500]

yeah i am on the stock lift pump too 81k, and havent had any fuel system problems, i do have the bigger lines on here, but thats it, it hardly ever dips below 10psi. and idles at 14... but when it does go im going to get the RASP system or maybe if they have figured out the mech/cam pump so that the psi can be regulated i might go that route.