What is the differance between Mechanical and electric gauges???
Also what does a Pyrometer gauge do?

 

Mechanical gauges actually have a tube or hose that connects to the gauge itself and that's how you get your readings.

Electronic gauges are much better and accurate and they have an electronic sender that you put in the engine bay and they send the information to the gauge. They are more complex and that is why they are more expensive. They are also much more accurate.

A pyrometer or egt gauge measures Exhaust Gas Temperature hense the name EGT. You can use an egt gauge for tuning because you can tell if the car is running ruch or lean by the temperature of the exhaust gasses. You can also pickup changes in timing while watching the egt gauge.

 

Thank you
That what i thought it was but i wanted to make sure before purchasing

 

Is the oxygen sensor in the exhaust the same one you use for the Air/fuel ratio gauge

 

???

 

sure you can use it, but that gauge would just be there for eye candy. Get a wideband if you want accurate readings.

 

^^^whats the difference???

Will the air/fuel gauge work if i connect it to the oxygen sensor that my ecu uses and share it or will i need to get a separate oxygen sensor for the air/fuel and a separate one for the ecu?

 

???

 

you can just splice in to the existing o2 sensor i believe

 

mechanical gauges are BETTER than electrical gauges.. they are usually more acurate, have more "sweep" (270 vs. 90 degrees) and can not fail due to electrircal failure.. the only draw back is running the actual tubes to the gauges..

electrical gauges are more common, but don't mean they are necessily better

-joe

 

For me, it depends on the gauge. If it's boost pressure, I'm okay with a mechanical gauge. If it's oil pressure, I'd only use electrical. No way in hell am I running a pressurized oil line up into my passenger compartment.

That said, it's been my experience that they're about equal in terms of accuracy and sweep. The electrical gauges are a bit more expensive and are sometimes a bit harder to install. Sometimes thay're easier, though, because all you have to run through your firewall is a few wires.

 

full sweep electrical gauges cost 3-4 times as much as 90 degree sweep electrical gauges

if your sender is faulty or dead, your gauge read will be off.. mechanical gauges just remove one more point of failure

-joe

 

Last time I bought gauges, the full sweep electrical gauges were only slightly more than the mechanical version of the same gauge.

 

What guages do you you recommend. i def want an iol pressure guage, but what others should i think about.

 

but way more than a 90 degree sweep electrical gauge

-joe