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?? Fuel Regulator/Rail...HELP ME

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Old 08-15-2007, 11:22 AM
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Default 8.1L Engine Guys

READ MY LAST POST PLEASE

Last edited by bgray; 08-20-2007 at 10:52 AM.
Old 08-15-2007, 11:44 AM
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He should be able to tell by looking at the tune (the IFR for a vac ref'd GM setup has all one value, while the non-vac ref'd setups have multiple values).

You can look in your engine bay and tell also -- pop the hood and look on the DS rail roughly in the middle. If you see a little mushroom shaped gizbot with a vac line coming off the top, you have one. I believe only the return fuel systems have them.
Old 08-16-2007, 08:48 PM
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yah its there...i was a few hundred KM away from the truck thats why i had to ask..thanks tho!
Old 08-20-2007, 10:48 AM
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does anyone know if the 8.1L Engines have the same vaccum line setup
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