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Sep 1, 2009, 09:40 PM
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#1
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Evolving Member
Personal Sales Rating: ( 6)
Join Date: Jun 2006
Location: New Jersey
Posts: 139
Drives: 2005 RR Evo 8
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Stock Fuel System?
How terrible is the stock fuel rail and regulator???
im gettin tuned soon and am ordering injectors this week.. either 880's or 1000's ..
i was wondering if you guys would reccomend getting an adjustable FPR????
also how good is the stock fuel rail???
let me know
thanks
- mark -
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AWD Revolution Evo 8 :
(2008) 12.5 @ 110mph
(2009) 11.7 @ 120mph
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Sep 10, 2009, 03:16 PM
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#2
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Evolving Member
Personal Sales Rating: ( 0)
Join Date: Jun 2009
Location: plainfield
Posts: 138
Drives: ford f350/ 2003 evo 8
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I think if your going above 750cc's you should probably get a fuel pump and regulator because theres a good chance 880s + will be starved of fuel, but im running 750s on stock fuel system and im doing ok
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Sep 12, 2009, 09:37 AM
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#3
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Evolved Member
Personal Sales Rating: ( 11)
Join Date: Apr 2004
Location: COLORADO
Posts: 1,042
Drives: 03'Evo8, 93' RX-7, 95' TSI, 92'TSI, 91'TSI x2, 92'GSX, 97'Civic EX, 08' GSX-R, 03' ZX6R 636, 03' Chevy Express van
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Your stock regulator and rail will be fine with those injectors. If you decide to do one or the other, i'd do the rail. Good luck.
Aaron
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Sep 12, 2009, 10:23 AM
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#4
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Evolving Member
Personal Sales Rating: ( 2)
Join Date: Sep 2005
Location: SC-Hanahan
Posts: 334
Drives: Evo IX
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fic 1250s here on stock rails/regulator. Fic bluemax is a really good injector
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11.554 @ 122.73 (full weight minus spare tire)
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Sep 16, 2009, 07:12 PM
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#5
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Evolving Member
Personal Sales Rating: ( 2)
Join Date: Oct 2006
Location: Indiana
Posts: 272
Drives: 03 evo VIII
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I have run 880s and 1250s on stock regulator/rail/lines. With a single walbro on 93 octane. No problems.
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03 EVO
FatFab/35r/Shep/Magnus/QM/AMS/SparkTech/Cornfed on a FatFlash.
Best E.T. 11.300
Best trap 136.52
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Sep 17, 2009, 06:29 PM
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#6
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Newbie
Personal Sales Rating: ( 4)
Join Date: Oct 2004
Location: Yardley
Posts: 54
Drives: 97 GSX, 03 Cobra, 97 Supra 99 Suburban, 91 Blazer, 98 Bourget, and Harley Softail and more toys
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No over run regulator problems like on the DSMs?
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Sep 17, 2009, 06:38 PM
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#7
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Newbie
Personal Sales Rating: ( 0)
Join Date: Aug 2009
Location: New Jersey
Posts: 69
Drives: 2006 Evo IX RS
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I have heard that once you start making over about 650whp the entire fuel
system needs to be upgraded including an aftermarket regulator as well.
Mainly because the fuel pressure will typically need to be higher than the stock 43.5psi
at WOT.
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Sep 19, 2009, 10:07 PM
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#8
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Evolved Member
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Location: COLORADO
Posts: 1,042
Drives: 03'Evo8, 93' RX-7, 95' TSI, 92'TSI, 91'TSI x2, 92'GSX, 97'Civic EX, 08' GSX-R, 03' ZX6R 636, 03' Chevy Express van
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Quote:
Originally Posted by Spoolin' By U
Mainly because the fuel pressure will typically need to be higher than the stock 43.5psi
at WOT.
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That's so wrong. Yes the base fuel pressure should be at 43.5 but it rises about one psi for every one psi of boost. If it stayed at 43.5psi at WOT under full boost, we'd all have problems.
Aaron
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Oct 4, 2009, 08:13 AM
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#9
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Newbie
Personal Sales Rating: ( 0)
Join Date: Jun 2009
Location: Brazil
Posts: 7
Drives: 01' Evo VII
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Good to know that I can just throw a Walbro in and keep the rest of the system.
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01' Lancer Evolution VII
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