autometer has these both types of gauges and they look identical. but what makes the mechanical gauges more expensive?

thanks!

 

with things like fuel pres. oil pres. and nitrous you need to run braided lines cause the pressure is going upto the gauge. The eletrical is just reading the pressure and relaying it back to the gauge. If anything should happen to the line while under pressure, you will have a seriour problem.

 

electrical you will put a sending unit in the line and run wires into the gauge. (safe)
mechanical, you run a braided steel line to the gauge, not good for gas, oil pressure, etc, b/c if the line breaks youve got a major situation.

 

so you guys are saying that mechanical gauges get the reading directly from the source, while electrical just reads off another device?.. but are mechanical gauges more accurate and quicker?

i'm thinking about getting nitrous presure, fuel presure, and fuel ratio gauges. which type would be best.

 

go with the electrical gauges, much easier to run wiring from senders to gauges, as opposed to bringing oil,or fuel into the interior of your car (fuel requires an isolator valve). stick with the elec. gauges , unless they are boost or vacuum gauges.

 

that's what i'm going to end up doing.. the only thing is that i don't think they sell electric nitrous presure gauges. do they only sell them mecanical?

 

AutoMeter makes an electric nitrous pressure gauge:

AutoMeter Sport-Comp Electric Gauges

Since the A/F ratio gauges tap into the stock O2 sensors, the readings are of limted value.... basically little more than a psychadelic light show. The stock O2 sensors are simply not accurate at the A/F ratios you need at WOT, and the A/f gauges don't even have calibration values.

 

Don't the electric gauges cost more? Probably depends on which one, and whether a factory sensor can be used...

I think both types are accurate, it's just the mechanical gauges read the input at the gauge, so a fuel line will be right behind that gauge. Electric, a sensor measures the fuel pressure from a safe spot, and it's wired to the gauge.

I think NX just came out with an electric nitrous pressure gauge, not sure. I've heard A/F gauges are junk, I wouldn't bother with that. I'm building a cheap wideband, I'd do that instead.

 

thanks guys.. sorry about all the questions.. i have one more!

does anyone know if the NOSystems nitrous presure, and fuel presure gauges light up? like the autometer c2's ?

thanks again.

 

anyone know?

cause autometers electric nitrous and fuel presure gauges are 150+ in the summit mag.

i'd rather buy the NOSystems gauges if they lit up. thanks.