shanec

Another thing I'd like to have is a guage with a range not a lot bigger that what I'll be using. I mean a 30psi gauge is just nuts when you're planning on 5psi and can't foresee every being 10 or higher.

I'm thinking a boost gauge that goes up to 15 would be cool.

Anyway...

How much fuel pressure can be expected in a supercharger with 5-10 lbs of boost? I have no idea.

Smooth_J

Correct me if I am wrong, but doesn't that correspond to the injector size?

shanec

Indirectly, yes. But if you've got four 40# injectors, in theory it would take 4x40 = 160 lbs on one fuel rail to max all of them out. A lot gauges I see are 100psi. I don't know exactly what this gauge is measuring - pressure from the fuel pump, a single injector, a fuel rail, etc...

I'd just like to see if I can find one where usable range is 50-75% at least of the gauge's full range.

Smooth_J

Wait, I don't think thats right. Its one, or maybe two injector fire at once. So if thats the case, the fuel psi would be around that (40, or 80 PSI).

onederful100

@ 10 psi and WOT you'll be about 80 psi fuel pressure. you will need the 100 psi fuel pressure gauge.

Smooth_J

Whats the stock fuel pump rated at?