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2500HD/3500 HD Trucks & Drivetrain Discussion Forum for the 2001 & newer 2500HD/3500 Trucks, Transmissions & Drivetrain

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  #1  
Old 08-14-2019, 01:56 PM
Cold water Cold water is offline
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Join Date: Apr 2018
Location: Front Royal, VA
Posts: 14
Default To bypass or to not bypass

Hey everyone,
I hope everybody is doing well.
So since my last post when my injector pump(CP3) went out, I added a FASS system. Truck now runs better than ever except when I get down to 1/4 of a tank. I am aware that FASS offers a kit to remedy this.

So my question is this. Should I keep the fuel filter that is in the factory location, or purchase the bypass kit since the FASS unit has a filter and a true water separator?
Thanks for reading and offering you opinions.
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2003 Ext. Cab Long Bed
Banks Cold Air
Banks Exhaust
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  #2  
Old 08-15-2019, 06:58 AM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,691
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Leave the factory filter in place. It is much better than it is credited and the filters that you are using are grossly overrated.
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More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ

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  #3  
Old 08-15-2019, 05:03 PM
Cold water Cold water is offline
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Join Date: Apr 2018
Location: Front Royal, VA
Posts: 14
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Hey Kennedy,
Thanks for taking the time to answer my question.
So I have been changing the factory filter with no more than 15,000 miles of use. It is to my understanding that this is the recommendation of GM. Should I keep to this regiment? This is a POV. I use the truck for long trips, hauling firewood, occasionally carrying a slide in camper, etc, etc. I truly love the "I want to go" feeling no matter what when I apply pressure to the skinny pedal.
158,000 miles.
Thanks again!
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2003 Ext. Cab Long Bed
Banks Cold Air
Banks Exhaust
Early Edge w/Attitude
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  #4  
Old 08-21-2019, 06:39 AM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,691
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Filter change intervals are simply a guide/guesstimate. One truck may run empty on the highway and get near 20mpg. The next truck may tow and get 10mpg burning 2x the fuel in 15k. Then there is the variance in cleanliness of the source fuel which can be even greater. For this reason I use a filter restriction gauge:

http://www.kennedydiesel.com/detail.cfm?ID=289

In my case I am changing oil every 10k with primary fuel filter every 20-40k and secondary once in a blue moon. This is because I fuel from my own tank with double filters and treatment which would not work in the real world.
__________________
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ

Custom tuning in house using EFI Live tuning software!
Reply With Quote
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