Factory Fuel Pump Limits

superhick8160 · #1 (**permalink**) 08-26-2010, 04:55 PM

Just curious how much the factory fuel pump can actually support. What combination is the max and where does it start to not be enough?(size sticks, turbo, programming) Also does the regulated return with a stock fuel pump any better than just a stock setup?

06powerstroke06 · #2 (**permalink**) 08-26-2010, 06:41 PM

Really it can get maxxed out on stock injectors but if you are going to put larger injectors in a aftermarket set up is a must. I installed 190s and it is far from keeping up, AirdogII on order.

Lilpooh · #3 (**permalink**) 08-26-2010, 06:41 PM

I'm guessing it would depend if your talking about a new fuel pump, or one that has been on the truck for awhile. A new one will have a higher psi at WOT, compared to one that has been ran for awhile. You would need to put a fuel pressure gauge on first to see where it's at while running it WOT. Without a gauge you really would be guessing.

**PGreenSVT** · #4 (**permalink**) 08-27-2010, 06:33 AM

I'll throw my vote in for the Airdog II as well. With basic boltons and an extreme tune the stock pump has a tough time keeping up with demand at WOT.

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