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Old May 12th, 2003, 09:23 AM
Tim Barnum's Avatar
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Fuel pressure/ boost level

Just for starters. What should the fuel pressure be with no vaccum if the boost level is at 20psi? I have the stock turbo, 40lb injectors, ported heads, 218/218 cam, 3" dp, big neck innercooler, 340 fuel pump and 45deg KNOCK even with no boost. The 3" down pipe is hitting the headers causing false knock. So it's hard to tune with the false knock. I would like to get an idea where it should be set at to be safe with 101 unleaded fuel until I can get the DP problem fixed.
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Last edited by Tim Barnum : May 12th, 2003 at 09:26 AM.
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Old May 12th, 2003, 12:39 PM
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I believe it will depend on the car...
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Old May 13th, 2003, 11:09 PM
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Depends on the chip's programming since it controls your injectors..

Fix the knock..cuase most chips will pull timing out when they sense knock.
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Old May 14th, 2003, 11:28 AM
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The 3" downpipe hits the frame and the headers. Is there a good 3" downpipe that clears the frame and stock headers with a new intergrated wastegate elbow? This 3" downpipe use the stock elbow.
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