air dog/fass question

[DBithell]

If you go to air dog or fass system do you have to keep the stock fuel filter?

I have heard that the stock fuel filter can be bypassed, removed and blocked off. But, wouldn't you loose the benefits of the fuel heater element located somewhere in the stock fuel filter housing? How important is that heater? Would anti-gel be enough? I guess I'm asking if you should keep the stock fuel filter too? Thanks.

 

[TLane]

My opinion: keep the stock filter. If any dirt gets in during the install, then the stock filter should catch it. Plus, if you have any warranty left, bypassing the stock filter could possibly void your warranty (I know, it shouldn't, but you never know what they'll try). It also keeps the water in fuel sensor, which is connected to the computer, working and happy.

 

[BIGNASTY]

filter's

When I first installed my AD 100 I used the Glacier Diesel Filter delete kit but after talking on the site. I reinstalled it used the better filter in it and had all the fetures of the original. Plus the filter's on the AD 100 were changed to Fleetgaurd for even better filtration. Look on the search section and Im sure you will find all my stupid questions ( I always thought the stupid one's are the ones not asked) but Im sure some of these guy's will tell you mine were pretty bad.

 

[DBithell]

thanks for info, didn't even think about the water sensor.

 

[JMetzger]

My opinion is with BIGNASTY & TLane. Keep the oem filter as they are good filters & it will tell if you have water in the filter. My FASS HPFP 95 did not come with filter so I had to use OEM filter.

 

[Wygate]

I installed the FASS 95 sys about a year ago and kept the stock filter in place, it can only help. I lost my entire fuel sys to the tune of 14k just after buying the truck. It was due to dirt and water in fuel bought at a 11 bay truck stop on the PA turnpike. Keeping the stock leaves the WIF in place and hopfully will work this time.

 

[DBithell]

thanks for the replies, makes sense to leave stock in place.

is it then safe to assume that the stock filter would not have to be changed nearly as often with the addition of additional filtration? If so, how many miles can you go before changing the filters?

 

[TLane]

In theory, you could leave the stock filter on for a long time given that the air dog/fass system has a finer filter. But...
If you have any warranty left, then you should change the stock fuel filter according to Dodge's guidelines (I think that is every 15k miles). That will keep the warranty in place, failure to do so could void the warranty.

Fuel filters cost $35 to $40, which works out to $0. 00266 per mile. Given that the total cost of operation is somewhere around $0. 50 per mile, you're not saving anything by not changing the filter. I'm assuming you're changing it yourself.