Cat fuel filter mod

Duramax52513

Duramax52513

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Jun 23, 2013
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Does any one use the cat fuel filter mod that works with the factory setup, I've heard there much better filters but just wanted to hear it from you guys if it was worth the $90-$130 to buy, the other thing is the filters are only $20 compared to the $60 for the oem ones.

If you do run this does your truck have the W.I.F sensor and does it hook up to the cat fuel filter mod? Not to be rude but I don't need a lift pump right now so I'm. Not looking for guys to just say but an air dog and you'll be set.

Thanks for the input in advance
 
Duramax52513

Duramax52513

New member
Jun 23, 2013
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So in other words I can't do the cat filter mod? Because I have the WIF sensor, I guess I'm just trying to have the best setup possible without buying a $600 lift pump
 
Duramax52513

Duramax52513

New member
Jun 23, 2013
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Sorry guys they might be dumb questions but this is my first diesel and I'll be the first to tell you I don't really know a whole heck of a lot about the Duramax I just own one
 
SoCalMike

SoCalMike

Member
Dec 12, 2010
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SoCal
You can run the adapter just do not use a cat filter on it as your primary fuel filter. You have to run a Donaldson filter on the adapter to have a water separator.
 
Duramax52513

Duramax52513

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My water in fuel light has never come on either I was just trying to pay $20 for a better filter rather than $60
 
Ne-max

Ne-max

I like turtles
Nov 15, 2011
3,361
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Lincoln, Ne
hondarider552 said:
In 4 different duramax' I have yet to see my water in fuel light come on.
Click to expand...

You drive yours 20 miles a year in Arizona. Wait tell you get in the Midwest. I've learned the water in fuel sensor on these trucks suck. I have opened the drain many times without the light on and had a teaspoon or 3 of water come out.
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,236
550
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in the buckeye state
Ne-max said:
You drive yours 20 miles a year in Arizona. Wait tell you get in the Midwest. I've learned the water in fuel sensor on these trucks suck. I have opened the drain many times without the light on and had a teaspoon or 3 of water come out.
Click to expand...

I've seen pools of water at the bottom of my fuel tank from condensation and temp swings
 
minerigger

minerigger

Active member
Dec 24, 2013
2,660
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Casper, WY
I don't think they do. My wires in my WIF plug broke in the cold and not once did it ever register that it was disconnected. I think if it worked it would've noticed it wasn't plugged in
 
OregonDMAX

OregonDMAX

NOT IN OREGON, NO DURAMAX
Apr 28, 2013
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Goodyear, AZ
I ripped my wiring all the way out completely, I'm also convinced they do not work.

OP if you had a liftpump like airdog or fass you could use the cat filter in the stock location as the liftpump have water separators on them.

But then again I've never gotten any water out of the airdog water seperator either.
 
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