It's just the tune. I underestimated my mods not working with the stock Maggie tune.
Originally Posted by wkdivr
If you're trying to block off that port, you'll need a 1/8" pipe plug, I think. I think you could use that port for a fuel pressure gauge, too. If you're pointing to that whole block, then, then, no you're not going to find it locally. It's a custom piece made for the Magnuson fuel rails.
I have the plug. I took it out to match the theads, but the schrader type valve that goes on it is what the fuel pressure gauge hooks to. I have a new gauge, but need the valve to fit it to. Just the valve. Not the whole braket.