Integrated AFR gauge and boost.

 

http://www.impconcepts.com/nissan300zxafminjgauges.htm

That is awesome, if I fit my white LEDs behind the cluster without starting a fire I might have a look into it!

Seen that a few years back, although never seen anyone else attempt it.

As it's simply a visual represntation of the narrowband lambda output, it is all but completely useless in providing information regarding AFRs. It's a lean-stoich-rich meter: Idle will be yellow, deceleration will be red, acceleration will be green. It would inform the driver when that individual O2 sensor has failed, little else. The IDC meter is pointless as well. If you like building circuits for fun, then fair do's, but for informational purposes neither "gauge" has any real merit.

 

AFR requires a wideband output & controller, aftermarket equipment only on these cars.

Thanks for that Noel, shame that, it looked pretty useful but you have just explained why it isn't. Wideband AFR gauge is on the shopping list after my recent issues, it's encouraged me to invest in one for my new engine when I eventually sort it all out. Compared to a rebuild it's a cheap indication that could well save an engine.

Rebuild your NA engine. High comp power :D

Rebuild your NA engine. High comp power :D

 

Lol, that was the least likely path I was going to take. I do have a slightly unorthodox plan, I'm sure you will appricate it.