Electric fuel pressure gauge.

[Falb, John]

I use a $20 mechanical gauge from a local Earls dealer, the gauge is made by
Marshall. I just route it through the hood and put it under the windshield
wiper. It works if you just need it for tuning.

John Falb

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I'm essentially looking for an inexpensive tuning/diagnostic tool as 
well. Nothing that will remain in the car permanently.
$80 seem to be the going price for guage and sender.

thanks
jw