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| 01-04.5 LB7 Performance Parts Discussion Discussion of Performance Parts For the 01-04 LB7 Duramax Trucks No Advertising |
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12-30-2012, 05:23 PM
| eBay Motors #1 (permalink) |
| Duramax Forum Supporter   Join Date: Nov 2011 Location: Shepherd, MI
Posts: 93
 | dual kennedy pumps i have one of the kennedy pumps right now, thinking about adding two. Would it make to much pressure that it would start to surge at idle? Still kinda undecided if i need it or not because it should make around 150-160gph @ about 4 psi with just one pump. Could use anyone's input with first hand experience on these.
__________________ 2003 Medium Green Metallic CC/SB LB7 Duramax EFI Live With DSP5 | Autometer EGT, Fuel, Boost | MBRP 4" Straight Pipe Exhaust PPE Boost Valve | Fass 150 Titanium | Bills Custom AEM Intake | ProEFX Cowl Hood Debadged | Zone Keys & Blocks | High Idle Mod | High's/Low's/Fog's All On Mod | DDM 5000k HID's Tinted Lights And Windows | Black And Machined 17" Eagle 197's On 285/70/17 AT3s Rough Country Sleeves | DHD Steering Brace | LML Exhaust Manifold | Diamond Eye Downpipe Wishing For A Built Trans! It's Safe To Say I'm A Little Addicted... |
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12-30-2012, 05:31 PM
| eBay Motors #2 (permalink) |
| Banned Join Date: Nov 2008 Location: Arizona
Posts: 17,269
| Pumps create flow, restriction creates pressure  I have dual Kennedy/TTS pumps and they make 8-10psi. Never surges. Had a set on my LBZ for 4 years, and my LB7 is going on almost 2 years. Never once a problem, I love them. |
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12-31-2012, 06:56 AM
| eBay Motors #3 (permalink) |
| Duramax Forum Supporter Join Date: Nov 2011 Location: Shepherd, MI
Posts: 93
| alright that helps me out. wasnt sure what it would do. ill order one up!
__________________ 2003 Medium Green Metallic CC/SB LB7 Duramax EFI Live With DSP5 | Autometer EGT, Fuel, Boost | MBRP 4" Straight Pipe Exhaust PPE Boost Valve | Fass 150 Titanium | Bills Custom AEM Intake | ProEFX Cowl Hood Debadged | Zone Keys & Blocks | High Idle Mod | High's/Low's/Fog's All On Mod | DDM 5000k HID's Tinted Lights And Windows | Black And Machined 17" Eagle 197's On 285/70/17 AT3s Rough Country Sleeves | DHD Steering Brace | LML Exhaust Manifold | Diamond Eye Downpipe Wishing For A Built Trans! It's Safe To Say I'm A Little Addicted... |
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12-31-2012, 10:53 AM
| eBay Motors #4 (permalink) |
| Junior Member  Join Date: Dec 2009 Location: Colorado
Posts: 42
| In my opinion one pump is enough unless you are planning on a big built motor. But you could always run two and add a regulator if needed. Two is also nice for redundancy in case one goes out. Also the statement above is incorrect. The pump creates the flow and pressure. Restriction causes a loss of pressure.
__________________ 2005 Silverado 3500 SRW 4" Exhaust / 5" Tip Predator Programmer LBZ Turbo Inlet |
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12-31-2012, 11:09 AM
| eBay Motors #5 (permalink) |
| Banned Join Date: Nov 2008 Location: Arizona
Posts: 17,269
| Actually, 2 pumps are fine for a stock engine. Ive ran them for almost 6 years. No regulator needed as the TTS pumps are on-demand pumps. |
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12-31-2012, 11:31 AM
| eBay Motors #6 (permalink) |
| Duramax Forum Supporter Join Date: Nov 2011 Location: Shepherd, MI
Posts: 93
| well i was thinking about just adding another since its not a ridiculous amount of money and would help over come dual filters and keep the cp3 feed with pressure at all times. i dont have a fuel pressure gauge to let me know how its working which kinda sucks for me.
__________________ 2003 Medium Green Metallic CC/SB LB7 Duramax EFI Live With DSP5 | Autometer EGT, Fuel, Boost | MBRP 4" Straight Pipe Exhaust PPE Boost Valve | Fass 150 Titanium | Bills Custom AEM Intake | ProEFX Cowl Hood Debadged | Zone Keys & Blocks | High Idle Mod | High's/Low's/Fog's All On Mod | DDM 5000k HID's Tinted Lights And Windows | Black And Machined 17" Eagle 197's On 285/70/17 AT3s Rough Country Sleeves | DHD Steering Brace | LML Exhaust Manifold | Diamond Eye Downpipe Wishing For A Built Trans! It's Safe To Say I'm A Little Addicted... |
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12-31-2012, 11:32 AM
| eBay Motors #7 (permalink) | |
| DuramaxForum Enthusiast  Join Date: Jun 2011 Location: Bellingham, Wa
Posts: 2,758
| Quote:
If you have your pump running, and pinch the line...is the pressure between the pump and pinch point going to rise or lower?
__________________ Gideon  01 LB7 EC/SB Ally 4x4 shop ornament DD: 1990 4runner completely stock 4x4 3.slow Big Thanks To Adrenaline Truck Performance, Alligator Diesel Performance, and Socal Diesel | |
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12-31-2012, 11:33 AM
| eBay Motors #8 (permalink) |
| Banned Join Date: Nov 2008 Location: Arizona
Posts: 17,269
| Glowshift has a electric fuel pressure gauge that is like 60 bucks. Can run the sending unit to the bleeder screw on the fuel filter housing and put the gauge in your pod. |
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12-31-2012, 11:35 AM
| eBay Motors #9 (permalink) | |
| Banned Join Date: Nov 2008 Location: Arizona
Posts: 17,269
| Quote:
Like I said, pumps create FLOW. RESTRICTION creates PRESSURE. Ill put it into Laymans terms... Turn on your garden hose at wide open, now squeeze the hose to RESTRICT the FLOW. Now you get PRESSURE.  | |
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12-31-2012, 11:36 AM
| eBay Motors #10 (permalink) |
| DuramaxForum Enthusiast  Join Date: May 2011 Location: Pinedale WY
Posts: 2,543
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__________________ Caleb 22 2007 LBZ CCSB S475/stock Wehrli Twin Turbo Kit/Suncoast Built by Dmitri Millard EFI Live DSP5 by Duramaxtuner.com 5" DE, rerouted, debadged, demolded, 18X9 BMF Novakanes Stealth wrapped with 285/65/18 Nitto Trail Grappler MTs, 45 gallon transfer flow replacement tank, Amp power steps, All Season bulletproof trans/power steering line kit, Airdog II 165, Nicktane with Cat filter, Edge Insight CTS with pyro  Big thanks, Duramaxtuner.com & Willie @ Synthetic Motorsports |
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