Duramax Diesels Forum Truck of the Week
  #1  
Old 09-18-2018, 06:33 PM
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Default Lift Pump??

What is the purpose of the lift pump? I have the Kory Wilis tune and on #5 says it need the lift pump. I have ran 5 with out it but dont want to hurt it.
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Old 09-18-2018, 06:40 PM
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It should keep positive pressure and supply to the CP4 for you, otherwise you starve the system of fuel on the big tune. 1) You can hurt the CP4, 2) do you really want the P0087 and P1093 problems?
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Old 09-18-2018, 07:17 PM
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Quote:
Originally Posted by TheBac View Post
It should keep positive pressure and supply to the CP4 for you, otherwise you starve the system of fuel on the big tune. 1) You can hurt the CP4, 2) do you really want the P0087 and P1093 problems?
What are the P0087 and P1903 probems? Trans problems?
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Old 09-18-2018, 07:27 PM
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Low rail pressure.
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Tom
"BBT" -- 2003 GMC CC/SB 4x4 12.14@111.15
"The Cruzer" -- 2014 Chevy Cruze Diesel -- the fun little DD
"Kleshay" -- 2000 C5 Corvette -- the toy
"The Bigger Boat" -- 2011 Workhorse P700 - 6.0LS/Allison - what I drive at work


Two wrongs dont make a right, but three rights do make a left.

Reality is a matter of perspective.

This forum isn't for the weak of heart.....or wallet.

"Lets build a race car they said. Itll be fun they said. I don't know who "they" are.........but they need a good punch in the face!" -- mufflerguy (yb)
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  #5  
Old 09-18-2018, 07:31 PM
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Dont want those. Havent had them yet. Just wonder if I should have head studs put on first or lift pump..
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Old 09-18-2018, 07:33 PM
Jacy_dzlguy Jacy_dzlguy is offline
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Lift pump definitely first
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Old 09-18-2018, 07:35 PM
Jacy_dzlguy Jacy_dzlguy is offline
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How much power are you planning on making? Shouldn’t need studs with a stock turbo
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Old 09-18-2018, 07:41 PM
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Well I am worried about the max effort 200 hp on #5. For right now. I know i snapped a head bolt with a 75 hp tune from the neens outta so cal towing my 10k fifh wheel in Glamis. Now I regularly tow the 16k toy hauler and dont want to blow head gaskets.
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Old 09-18-2018, 07:43 PM
Jacy_dzlguy Jacy_dzlguy is offline
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Quote:
Originally Posted by b.d.keathley View Post
Well I am worried about the max effort 200 hp on #5. For right now. I know i snapped a head bolt with a 75 hp tune from the neens outta so cal towing my 10k fifh wheel in Glamis. Now I regularly tow the 16k toy hauler and dont want to blow head gaskets.
That was this truck?
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2005 LLY SCLB (sold)
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Old 09-18-2018, 07:43 PM
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That was on my lly tho with 230k miles
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Old 09-18-2018, 07:48 PM
Jacy_dzlguy Jacy_dzlguy is offline
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Not exactly the same engine.. if you’re worried about it run a actual tow tune. More around 30-40 hp.
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Old 09-18-2018, 07:51 PM
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I know I blew the trans on the 30-40 hp tune w in 100 miles of towing the camper.
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Old 09-18-2018, 08:13 PM
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What I mean is I know its not the same engine. Tho itís different the trans coudnt handle the power. I want to make sure the engine is set up for the power
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Old 09-18-2018, 08:46 PM
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Alright....so lift pump it is...lol
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Old 09-18-2018, 10:05 PM
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Chris's tune was not responsible for your head gasket. Get a lift pump asap
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