Fuel System Pump Change

I'va had a PSI system flowed and have imput it into Davenports Jet-Size program. If I decide to go to a larger/smaller pump, can I simply plug in my new fuel pump flow rates and change the nozzles accordingly and bringing the fuel pressure back down/up to a desired pressure?

C

 

Why not call Les and ask him .

 

Jetsize

Hi guys! Well in the "instructions" that Les Sends with the program He includes the overall procedure to do it . But to answer your question YES you change your flow and play with the numbers the thing to watch is your GPM and pressure , also keep in mind NO big changes on atmosferic condition as it will change your numbers.

But most important follow what the car tells you! Yeah I also got confused... Good luck !

 

Here is what I wouls like to do. I bought and engine and was given all the tune up information sheets from system sizing info. It had an 800 pump. I didn't get the pump with the engine, but I do have a flowed 750 pump. I was hoping to plug my pump's flow numbers in and bring the pressure back up.

I am considering having a complete new system flowed.