The best guage would be an electrical guage with a sending unit IMO. Dynotune and NX are the only companies that I know of offering these guages right now, though there are probably others out there.
i looked at them... also the autometer electric gauges but buying an electric nitrous and fuel pressure gauge will cost almost same as i paid for my nitrous kit lol that's why maybe i thought they'll be cheap ones unless i get a mechanical one but i dont wanna take chances and don't want to run stainless hoses all over my car haha
heh, I haven't felt the need for a dash mounted guage. I've got a bottle mount and it works great. Just a quick glance behind me with the back seat down and I've got the pressure. I really only check my pressure when I first turn the bottle on and right before I make a run. I spent a little time getting my bottle heater dialed in, so I always know about where my pressure is.
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