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01-03-2017, 10:37 AM
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#1 |
    
Drives: 2010 Camaro SS Join Date: Jan 2015
Location: Valencia
Posts: 1,305
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Return fuel system question
I just upgraded the fuel system in my car, my question is what are you guy's setting your base fuel pressure to (vac line off reg)?
Here the new fuel system Fore dual 450's 1000cc injectors -8 feed |
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01-03-2017, 11:11 AM
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#2 |
Drives: 2010 SS/RS LS3 M6 Join Date: Apr 2011
Location: Kansas
Posts: 693
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Normally the stock 58 with vac line off, but some do go a little higher depending on injectors, fuel type, pressure drop, flow, etc...
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01-03-2017, 11:14 AM
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#3 |
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Drives: 2010 Camaro SS Join Date: Jan 2015
Location: Valencia
Posts: 1,305
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I'm currently set to 58psi vac line off, I just was not sure if that was correct.
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01-03-2017, 11:32 AM
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#4 |
 
Drives: 2014 Camaro 2SS 1LE Join Date: Jul 2015
Location: Lima Ohio
Posts: 167
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My tuner set my 850 to 58psi no vac- and sad it's what it's should be, but with 1400cc we lowered to 43 to make DD on pump gas
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 AGP TT 807whp 811wtq 13.46psi E85+methanol |
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01-03-2017, 12:51 PM
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#5 |
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Drives: Anything I want Join Date: Oct 2008
Location: DfW - Texas
Posts: 5,405
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42 is what we run
Do go below 38 or the jet pump may stop working.
We run 42 on our cars. |
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01-03-2017, 01:30 PM
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#6 | |
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Drives: 2010 Camaro SS Join Date: Jan 2015
Location: Valencia
Posts: 1,305
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Quote:
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01-03-2017, 04:32 PM
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#7 |
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Drives: 2010 Camaro SS Join Date: Jan 2015
Location: Valencia
Posts: 1,305
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anybody else have input on this?
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01-03-2017, 04:40 PM
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#8 |
      Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Depends on injectors, max boost, etc etc etc.
If you can support the flow at lower pressure, go for that. If you need to run higher pressure do that. Be aware that some injectors don't like super high pressure, so make sure they are compatible with the max psi if you are going to run a lot of boost. Also depends if you are running a 1:1 regulator or what. Talk to the person who designed your fuel system.
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Nick
Corvette Z06 -1200ish rwhp |
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01-03-2017, 05:01 PM
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#9 | |
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Drives: 2012 2ss/rs L99 Join Date: Jun 2015
Location: Southern illinois
Posts: 167
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Quote:
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2012 2ss/rs L99
Agp twin turbo 51/61 full 3 inch stainless works retro chambered catback Tuning by Greg Adams |
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01-03-2017, 05:18 PM
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#10 |
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Drives: 2010 Camaro SS Join Date: Jan 2015
Location: Valencia
Posts: 1,305
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What if any advantage is there to running lower base fuel pressure?
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01-03-2017, 06:50 PM
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#11 | |
Drives: 2013 Camaro SS Turbo Join Date: Apr 2014
Location: South Florida
Posts: 1,525
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Quote:
 I wondered if it would be beneficial too but my tuner wanted it set to base of 58psi and it was fine, plenty of fuel easily for 800+whp on full e85 with dual walbro 450 pumps and 1000cc injectors. Know of another same setup just did 830whp That being said run it by who is going to tune the car and see what they prefer
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01-03-2017, 08:30 PM
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#12 |
 
Drives: Red Jewel Camaro SS Join Date: Mar 2014
Location: East Coast
Posts: 392
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I set mine at 58psi with no vacuum.
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BTR LSX388,AGP Twin Turbo.6L90,GM 9.9" Diff.Fore Innovations Level 4 fuel system.Great fuel economy !!!! 1xxx RWHP
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01-03-2017, 08:33 PM
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#13 |
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Drives: 2010 Camaro SS Join Date: Jan 2015
Location: Valencia
Posts: 1,305
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Sounds like 58psi is it unless my tuners says otherwise
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01-03-2017, 11:45 PM
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#14 |
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Drives: 2012 2ss/rs L99 Join Date: Jun 2015
Location: Southern illinois
Posts: 167
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Yes 58 with no vac
__________________
2012 2ss/rs L99
Agp twin turbo 51/61 full 3 inch stainless works retro chambered catback Tuning by Greg Adams |
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