I was wondering i have a stock tbi fuel pump i converted to carb and kept the fuel pump. i am using a mallory return style afpr. i want to run a powershot nos system on my 350. my questions are.

1. how much psi does nos and running the car at 5.0 psi require. does a tbi fuel pump have enough to handle it?

2. If the fuel pump does have the ability, will a tpi fuel pump work and can the mallory afpr be able to handle all of the excess psi?

3. what books or web sites are there for nos to learn more tips and tricks on how to setup and tune nos. I know how to install, just my first time with nos.

thanks in advance.

 

ttt

 

You need 7psi flowing to the carb, and around 6psi flowing through the nitrous. You can have enough pressure, its the volume you need to be worried about. It needs to hold 6psi all the way through the run, not just while the car is idling. If that fuel pump can't keep up with both the nitrous fuel and the carb, it will lean out and you'll burn a piston or valve. I'm not sure on the specs of those type pumps.

 

would a tpi pump be able to handle the volume or do i need to upgrade to a holley blue or something.

 

walbro255lph intank will easily flow enough for them both and that can be had for about 120 bucks with a hotwire kit from TSP

 

just wondering what is a hotwire kit?

 

prettymuch a relay that gives more juice to the pump so it can flow at its max potential

 

so would the stock fuel lines and an in tank pump be able to handle it. or should i put in a holley blue pump with bigger lines? and if so will my afpr be able to handle the volume of fuel that it needs to return?