LT1-LT4 Modifications 1993-97 Gen II Small Block V8

stock fuel pressure?

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Old 08-10-2006, 05:28 PM
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Default stock fuel pressure?

any one know what the stock fuel pressure is
Old 08-10-2006, 06:12 PM
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Theoretically it is 43.5 with the vacuum off, but the allowable range is like 41-47psi again with the vacuum line off.
Old 08-11-2006, 01:20 AM
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Mine is at 48PSI vaccum off with mr Walbro
Old 08-11-2006, 09:55 AM
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call me crazy for asking, but what do you mean the vaccum off>
Old 08-11-2006, 11:13 AM
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^^ Pull the vacuum hose off the regulator. "Simulates" WOT situations..
Old 08-11-2006, 11:42 AM
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any gain in doing this?
will this cause any problems
Old 08-11-2006, 01:22 PM
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Yea.. I try to use as less fuel as possible..lol
Old 08-11-2006, 01:58 PM
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Originally Posted by edlt1
any gain in doing this?
will this cause any problems
ummm you dont do this while driving ... as stated if you pull the vacuum line while testing your fuel pressure it will simulate a wot situation.



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