A/F Gauge install (prosport)

[vaultinpenguin]

Im installing a Prosport A/F gauge..there is a red yellow, black and grey....red is 12v source...yellow is constant power.. black is ground and grey connect to the AF source....now my queston is...WTF is that?
i searched and couldnt find a good answer...any help would be appreciated!!! pictures to.. even if it just has an arrow pointing to the location THanks!

[3000gt_vr4]

Originally Posted by vaultinpenguin

Im installing a Prosport A/F gauge..there is a red yellow, black and grey....red is 12v source...yellow is constant power.. black is ground and grey connect to the AF source....now my queston is...WTF is that?
i searched and couldnt find a good answer...any help would be appreciated!!! pictures to.. even if it just has an arrow pointing to the location THanks!

Ok basicly its like a stereo the constine is power that is always on like from the batter(in radio it saves your stations and time) black is ground and red is probably for the lights, that you hook up to your lights so when you turn them on it turn the gauge on aswell. and the grey one is what measures the air fuel mixture, this one i would hook up to the ecu, but i don't have much ecperience with this car yet, what i have seen been done is you run that grey one to the o2 senor that is after your exhaust manifolds.

see but i think thats just the honda ricer way to go, some one else with more experience may have a diagram of the ecu and can pin point were each cable should go.

[andyvr4]

First off that gauge is going to be pretty much be useless except for telling you when you're extremely lean or extremely rich. Otherwise it's more or less just a light show.

You can find the signal from the o2 sensor that you want to display at the ECU by reading this article on stealth316. The ARM1 displays the same thing that you're trying to display just in a different form so the signal that you're looking for is the same.

[mike92stealthtt]

Step 1. Put back in box

Step 2. Put it up for sale on some Honda forum

Step 3. Buy a wideband if are looking to tune your car

Its ok I bought an a/f gauge a while back when I didn't know better but ripped it out when installing some useful gauges.

Mike

[tfw a-ok]

I find it interesting that most electronic a/f gauges are way off and yet when I log with the Evoscan software I can track both my wide band a/f values and the Mut II values the ecu sees for a/f and they are very close.

How does Mitsu do it with narrow band 02's ??????????