Large aux fuel pump

Stumped · 04-20-2025, 09:07 PM

Has anyone run a larger fuel pump with a aux type setup? I already have Dsx aux and meth but looking to add port down the road. Can I just upgrade that pump with say one of the aeromotive brushless pumps? Just looking to options to use what I have instead of doing in tank pumps

JasperWalter · 04-20-2025, 11:53 PM

You can replace your existing fuel pump with an Aeromotive and Geometry Vibes brushless pump if your system requires more power. These pumps typically offer high performance and are capable of handling larger fuel requirements, great if you are upgrading your engine or increasing power.

2023_ZL1-AUTO · 04-21-2025, 05:48 AM

I and a few others at 750+rwhp on the forum run the Katech dual drop in and module. There are other fine pumps to select as well. Not seeing all your mods in detail, but, sounds like you may be at similar point I was at with my build once. I was maxing out on fuel, but the car had more to give then stock fuel pump and my JMS Fuel Max couldn't keep up with. I ran E60 mix with no issues. But, after installing an upper and lower pulley and having my blower Kong X Port done, I was way out of fuel to run any E mix. So, I had a Katech dual fuel pump installed, THSPI Port Injection, am 18% lower pulley and a few other misc. items. Now, I'm running straight E85 and have more fuel than I can use with out installing a CAM. After the drop in fuel pump, you should not need the AUX pump any longer. Mike at Katech is a good contact to have. I also noticed your are less than 2 hours form CSP Racing. Maybe give Andrew a call and see what he says too?

Here is a like to the Katech pump:

https://katechengines.com/i-30498292...ontroller.html

Here is a link to my build thread:

https://www.camaro6.com/forums/showthread.php?t=611982

KingLT1 · 04-21-2025, 09:20 AM

Yes you can. I know a few running the Hellcat 525 inline pump in place of what came with the DSX aux kit.

ZL14ever · 04-21-2025, 11:06 AM

Quote:

Originally Posted by KingLT1

Yes you can. I know a few running the Hellcat 525 inline pump in place of what came with the DSX aux kit.

Are they using DSX controller to activate it, or some other way?

KingLT1 · 04-21-2025, 11:54 AM

Quote:

Originally Posted by ZL14ever

Are they using DSX controller to activate it, or some other way?

Using the DSX kit as intended but with the larger pump.

Hammer-joe · 04-21-2025, 08:37 PM

Quote:

Originally Posted by KingLT1

Using the DSX kit as intended but with the larger pump.

Do you know which pump every one is using? I did an internet search and
there is alot to chose from. Thanks

Stumped · 04-21-2025, 10:37 PM

Quote:

Originally Posted by 2023_ZL1-AUTO

I and a few others at 750+rwhp on the forum run the Katech dual drop in and module. There are other fine pumps to select as well. Not seeing all your mods in detail, but, sounds like you may be at similar point I was at with my build once. I was maxing out on fuel, but the car had more to give then stock fuel pump and my JMS Fuel Max couldn't keep up with. I ran E60 mix with no issues. But, after installing an upper and lower pulley and having my blower Kong X Port done, I was way out of fuel to run any E mix. So, I had a Katech dual fuel pump installed, THSPI Port Injection, am 18% lower pulley and a few other misc. items. Now, I'm running straight E85 and have more fuel than I can use with out installing a CAM. After the drop in fuel pump, you should not need the AUX pump any longer. Mike at Katech is a good contact to have. I also noticed your are less than 2 hours form CSP Racing. Maybe give Andrew a call and see what he says too?

Here is a like to the Katech pump:

https://katechengines.com/i-30498292...ontroller.html

Here is a link to my build thread:

https://www.camaro6.com/forums/showthread.php?t=611982

I’m making 1050 now with meth and e50. I’d like to turn it up another 100-150 to take full advantage of the built short block and possibly run full E. Running the card twice at the pump really is first world problems lol. Just hard to justify what some of these in tank setups cost. If I could get by with upgrading the aux pump to get a little more I’d just do that. Really I should just leave it alone but we all know how that goes lol

jlaudio11 · 04-22-2025, 09:16 AM

I made my own setup in the same fashion as the dsx with an aem 340 pump, controlling it with my reflex+ port controller. It's just lines, pump, filter and fittings.

swisstyphoon · 04-23-2025, 05:48 AM

I know a lot of shops make their own aux pump kits using larger pumps, so I don’t see any issue with swapping the DSX pump for something larger. Just make sure your controller and wiring can handle the current draw.

If that is not enough, check out the new twin aux pump setup from SMG Speed. It's a solid option with PWM control and Reflex integration, if you decide to go with the THPSI / Reflex port system.

https://smgspeed.com/products/smg-6t...ex-integration

04-20-2025, 09:07 PM	#1
Stumped Drives: 2017 ZL1 Join Date: May 2024 Location: Carlisle, Pa Posts: 2	Large aux fuel pump Has anyone run a larger fuel pump with a aux type setup? I already have Dsx aux and meth but looking to add port down the road. Can I just upgrade that pump with say one of the aeromotive brushless pumps? Just looking to options to use what I have instead of doing in tank pumps

04-21-2025, 05:48 AM	#3
2023_ZL1-AUTO Drives: 2023 ZL1 - Beast Build Join Date: Dec 2022 Location: Columbus, Ohio Posts: 1,268	I and a few others at 750+rwhp on the forum run the Katech dual drop in and module. There are other fine pumps to select as well. Not seeing all your mods in detail, but, sounds like you may be at similar point I was at with my build once. I was maxing out on fuel, but the car had more to give then stock fuel pump and my JMS Fuel Max couldn't keep up with. I ran E60 mix with no issues. But, after installing an upper and lower pulley and having my blower Kong X Port done, I was way out of fuel to run any E mix. So, I had a Katech dual fuel pump installed, THSPI Port Injection, am 18% lower pulley and a few other misc. items. Now, I'm running straight E85 and have more fuel than I can use with out installing a CAM. After the drop in fuel pump, you should not need the AUX pump any longer. Mike at Katech is a good contact to have. I also noticed your are less than 2 hours form CSP Racing. Maybe give Andrew a call and see what he says too? Here is a like to the Katech pump: https://katechengines.com/i-30498292...ontroller.html Here is a link to my build thread: https://www.camaro6.com/forums/showthread.php?t=611982 __________________ Katech Track Day CAM 38%•BTR Dual Valve Springs-Johnson Lifters•Trend 3/8 Chromoly Pushrods• VVT Del•CNC Ported Heads•AFM Delete• C5-R Timing Chain•Katech Oil Pump•Katech 112mm•Maggie 2650 3.25” Upper & ATI SD w/10.32” +20%•10 Rib Belt•RFBG•FI Interchiller Stage 2•THPSI Port w/875cc Inj•Dual Drop In Fuel Pump•DSX Aux Pump•Stainless Works 2" w/Legend NPP Axle Back•GESI UHO 4.5" CATs•Brisk RR14S Plugs•BMR Motor Mounts•BMR Cradle Lockout/Bushings Kit•DSS Chromoly DS•RPM 8-Point Roll Cage•10lb FireSense+ w/4Fire SFI 17.1 Fire Sys•Weld Forged Vitesse Rear 17x10 Beadlocks-Front 18x6•Unlocked TCM Last edited by 2023_ZL1-AUTO; 04-21-2025 at 09:23 AM.

04-21-2025, 09:20 AM	#4
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 7,633	Yes you can. I know a few running the Hellcat 525 inline pump in place of what came with the DSX aux kit. __________________ 2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel

04-22-2025, 09:16 AM	#9
jlaudio11 Drives: Chevy Camaro Join Date: Sep 2022 Location: IN Posts: 291	I made my own setup in the same fashion as the dsx with an aem 340 pump, controlling it with my reflex+ port controller. It's just lines, pump, filter and fittings. __________________ '20 Camaro LT1 Twin 67/62 turbo 401(L8t) Texas speed forged piston & rod, BTR stg1 turbo cam, holley ultra lo, port injection, circle d 3600 stall, et street r’s on racestar recluse wheels. 1.33 3.75 5.75@122.98 1/8 pb 9.04@141 1/4 pb technically '94 Camaro Z28 6mt cc306 cam, 4:10's, longtubes with x pipe, otr intake

04-23-2025, 05:48 AM	#10
swisstyphoon Former GM Technician Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009 Location: Switzerland Posts: 401	I know a lot of shops make their own aux pump kits using larger pumps, so I don’t see any issue with swapping the DSX pump for something larger. Just make sure your controller and wiring can handle the current draw. If that is not enough, check out the new twin aux pump setup from SMG Speed. It's a solid option with PWM control and Reflex integration, if you decide to go with the THPSI / Reflex port system. https://smgspeed.com/products/smg-6t...ex-integration __________________ 2018 Camaro ZL1 A10 Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, DSX dual intank pump, Lingenfelter high flow check valve, Motion Raceworks Flex Fuel adapter, LPE Big Bore Hpfp, XDI 30% Injectors, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can. 2006 Silverado Duramax Diesel MPI Compound Turbo 40% over Injectors Efi Live DSP5 Tuning Follow me on Instagram: SwissZL1

04-20-2025, 11:53 PM	#2
JasperWalter Drives: honda Join Date: Apr 2025 Location: America Posts: 1	You can replace your existing fuel pump with an Aeromotive and Geometry Vibes brushless pump if your system requires more power. These pumps typically offer high performance and are capable of handling larger fuel requirements, great if you are upgrading your engine or increasing power.

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