Fuel pressure

[99camaro]

Can someone tell me how much fuel pressure you are running to the regulator on a single fuel pump system and about a 300hp shot?
Thanks

[supernova]

That's kind of a hard question to answer. It depends on your jetting. I run a 5 jet spread and 7.5 psi on the fuel side. If I went up in jet size I would go down on the pressure. The saftest way to tune is read your plugs. That is the best tadle tale on you tune up......

I run one fuel pump (Magna Fuel Pro Star 500) at 27-28 psi to the fuel log, about 7 psi to the curb on it's own reg and 7.5 give or take a 1/4 psi to the fuel noid on it's own reg. You can see how it's set up in the picture. The small line is a bleed for the nitrous fuel noid.....

I've seen fuel pressure on nitrous systems as high as 10 psi and as low as 5 psi. If your not sure where to start call the manufacture the ask about their system's tune and go from there. Also I wouldn't start at that power setting if your not sure. Start at a lower hp setting to get your feet wet. A 300 hp system is big enough to hurt your motor if the set up is off.

Hope that helps.

[John_Heard]

I think he's talking about fuel pump pressure, but you did cover that.

It's certainly got to be higher than what your regulator is set at, and it has to be high enough to overcome g forces at launch for a rear mounted pump. I run mine a bit higher, around 32 psi with everything flowing.