Compatible Fuel Pressure Gauge?

[Russianblue]

I am having a cold start issue which only happens in near freezing weather. I replaced fuel pump last winter with the Delphi model and it "mostly" cured the issue but that could have been bc the temp wasn't cold enough.

The other day, first time i tried to start it in cold weather around 33 degrees, and it just turns over and over. I can usually fix it by cycling the fuel pump 5-6 times and the issue goes away until the next morning. Never recurs on the same day.

There are a TON of things could be causing this but i think my first order of business is to check my fuel pressures.

I'm looking gauge kits on Amazon and seeing some folks say they don't fit BMW or whatever.

Can someone recommend a gauge kit they KNOW fits the M54? Would love to land one for $30 or less but will pay up if i have to.

much appreciated!!