Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

twin pump install problem

Old Jun 24, 2008 | 10:31 PM
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we_todd_did's Avatar
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Default twin pump install problem

Ok here is the deal, I installed twin pumps and when both are on I have 80lbs of fuel pressure and the car will barely run and it throws my nitrous tune way out the window? Any reason for this?
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Old Jun 24, 2008 | 10:54 PM
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Do you have a regulator? and tune for the injectors?
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Old Jun 25, 2008 | 11:15 AM
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you smashed your return line while putting the gas tank back in
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Old Jun 25, 2008 | 01:07 PM
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What is your fuel psi on one pump? Did you drop the tank or cut a trap door? Is it a 98 or 99+ car? On my 98 without the bucket i could see a second pump getting in the way and possibly kinking the return line from the regulator. But I think mightymouse is right, you smashed the return line, its pretty easy to do if you dropped the tank.
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Old Jun 25, 2008 | 05:21 PM
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Its a 2000 car I cut a trap door, and with one pump on it is only 60psi if both are running its 80 psi.
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