Do I need a Fuel Sump?

OleBlackyLBZ

Active member
May 22, 2020
353
85
28
You guys think I would see any performance gains from a fuel sump or similar? I'm well over 600 with Danville 65, sportsman cp3, 45% Injectors and an Airdog 165...
 

Lparrill

And here we go again
Jul 30, 2010
445
9
18
Lander, WY
I don't think you'd see any performance gains. I didn't see any at 800+ when I swapped from stock pickup to sump on my old truck.
 

Bdsankey

Vendor
Vendor/Sponsor
Feb 1, 2018
4,225
1,330
113
Larsen, Wisconsin
There isn't a major gain until you start talking big HP numbers where the OEM pickup because restrictive. With that said, I personally prefer a sump as it makes installation easier by routing the suction line to the lift pump from the sump and returning the fuel to the OEM pickup. My thought on this is that it removes any possible restriction on the suction side AND removes any possible restriction on the filler neck (included return adapter) since I love using the fast big truck nozzle. A sump also will eliminate any of the 1/4 tank issues if you're having them.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,761
5,933
113
Phoenix Az
You guys think I would see any performance gains from a fuel sump or similar? I'm well over 600 with Danville 65, sportsman cp3, 45% Injectors and an Airdog 165...

nope. being you have the 165 that utilizes the factory connections, you really dont gain much other than a big hole in your tank. you need well over 1000hp before the stock pickup becomes too restrictive .
 
  • Like
Reactions: Bdsankey

OleBlackyLBZ

Active member
May 22, 2020
353
85
28
Thanks, I did some research and was seeing where people were saying over 600 you needed one. Didn't feel like I was having issues but wanted to make sure