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Valve stem remover is exactly what I thought. Just got a reply from Vulcan. Here's what they said: The kits are universal for all years, the silver piece is a 4/2 pipe adapter for those that may need it such as attaching an electric sender to the end of the hose and the other is a core too for 2000-2002.

With the Vulcan mechanical fuel gauge, can someone tell me what the silver fitting that's about 1" long, and has a plastic valve stem cap inside of it, is for? I've attached a picture of them. The plastic cap was inside the fitting, and the fitting was attached to the hose.

Thanks! Sounds like we're both tapped in at about the same place. It's interesting to me compared to what most other people seem to be seeing. Thanks for sharing.

No running an AirDog. Believe they're 1/2 lines. I do still have the stock fuel filter housing, and a big line kit that goes from the housing to injection pump. The housing and big line kit just isn't on the truck.

I apologize for resurrecting an old post, but need a little input. I haven't driven my truck very much since I started having these issues. I am now able to install a mechanical fuel pressure gauge. I'm looking at the kit from Vulcan Performance http://www.vulcanperformance.com/ProductDetails.asp?ProductCode=EVFP and I was wondering where you all recommend tapping in to the fuel lines, and how (tee, banjo bolt, etc). Also is there anything that isn't included in that kit that I would need. Thanks in advance for input on this.

Yes. Small brass one from Vulcan Performance.

Sending unit is installed in the AirDog fuel line probably 1 1/2 to 2 feet from the vp44. Would I be better off installing it into the AirDog itself?

My truck is a 2001. I have an older AirDog, and an ISSPRO electric fuel gauge. The issue I'm having is that when I first bump the ignition I get about 15-16psi of fuel pressure. Then running, or even if you let the pump shut off and then rebump the ignition, the fuel pressure goes up to 26psi. I really need to get my test gauge on it, but two different sending units and gauges have been put on it, and both read the same. I was wondering if anyone has any ideas of what I should check? Is it the AirDog, that's marked as being regulated at 15 psi, did I screw up with how I installed the gauge? Any input would be greatly appreciated. Also, the AirDog was on before I pressure gauge was (I know shame on me....), so I do not know if this is a recent change or has always done it.