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fuel pressure and jetting question

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Old 03-23-2005, 07:14 PM
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Default fuel pressure and jetting question

i have the gm universal NX kit on my car. i also have a holley fuel pressure regulator coming off of the stock fuel rail then into a fps switch.
My question is- I have the fuel pressure set at 6 psi. and i have the 35 n20 jet, and 18 nitrous jet in. Is this correct for a 50shot?? Is my fuel pressure correct. What about when i go 100 - 150 shot.. what should my fuel pressure
be at::::

Thanks alot

p.s. i have a stock fuel pump and 370 RWHP w/out n2o.
Old 03-25-2005, 07:50 AM
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Originally Posted by NX_CaGEdApE00
i have the gm universal NX kit on my car. i also have a holley fuel pressure regulator coming off of the stock fuel rail then into a fps switch.
My question is- I have the fuel pressure set at 6 psi. and i have the 35 n20 jet, and 18 nitrous jet in. Is this correct for a 50shot?? Is my fuel pressure correct. What about when i go 100 - 150 shot.. what should my fuel pressure
be at::::

Thanks alot

p.s. i have a stock fuel pump and 370 RWHP w/out n2o.
Not sure what you are trying to accomplish with the regulator on the rail but it needs to be taken off. If you had a stand alone fuel cell then i could see this useful with a Holley Blue pump. You dont need the Holley regulator if you have a 97 up LS1 vehicle. The jets are designed to be run at our 58psi. Hope that helps.
Old 03-25-2005, 07:17 PM
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so the regulator is doing nothing. Will i make more power with out the regulator???
Wont 58psi cause it to run a little rich????
Im new to this. i am used to carbs.
Old 03-25-2005, 07:18 PM
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what fpsswitch should i get??????
And does the LS1 timing tuner control activation and deactivation of nitrous or just activation?




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