Fueling & Injection - New to setting up fuel injection

Setting up regulator
Got the red Aeromotive one

What's the chrome long nipple thing used for.

Please help

Thank you in advance
Brian Stankowitz

sounds like the boost reference nipple. only need it if you are forced inducted. leave it open if not

Thanks
What does it do if I am running turbos ?

it raises the fuel pressure to compensate for the amount of boost you are running. reason for this is your actual injected fuel pressure, if normally 58psi, if you are running 10psi of boost, your actual injector fuel pressure is 48psi; and at that pressure you have to ensure your fuel injectors flow enough to keep up with your setup.
for every pound of boost you increase, the regulator also increases to maintain the equivalent same fuel pressure