1/4 or 3/8 for hardlining n2o kit?
We use the same 3/16 on a single nozzle or efi plate from the solenoid to plate/nozzle.
On the fuel delivery from the shrader valve to the solenoid we use 1/4.
Feel free to get in touch with me to tell me exactly what you are doing and Ill tell you what to use.
Dave
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