I tried doing a search and just couldn't find what I needed...

I had no problem tapping into the O2 sensor signal at the ECU wiring harness on my Evo 8, but I don't have an ECU Pinout map for the Evo X.

I know I can run a tap to the O2 sensor under the hood for the signal to my Air Fuel Gauge but is there an easier spot inside the car by the ECU wiring harness? I won't be tuning with this, it's more to just balance the look of the boost gauge on the other side of my steering column and a general idea of proper fuel delivery when under boost.

Heck I don't even know where the ECU is located yet, and a few searches proved that others didn't either with unanswered threads. I'm sure when I have to send my ECU for a mail in flash that the vendor will guide me, but I figured why not get the answer now. :P

 

Why do you want the 02 signal. Don't tell me for a turbo timer

 

The ECU's under the hood on the driver's side; lots of people know this. ECU pinouts are here: http://roadraceengineering.com/evox/...-ecuwiring.htm

 

No it was a gauge from my last Evo and having one gauge on the dash looked lopsided! I may replace it with an EGT gauge at some point but I won't be modded enough to warrant one until next year.

The stock O2 Signal is fairly useless expecially when it's displayed as a little light up LED, however, it is a nice tool to verify that your O2 sensor is working like normal or if it needs replacement. As we all know race gas can really hammer them over time. Also if you are going WOT and it drops full lean due to a boost hose falling off the fuel pressure regulator or an intercooler popping off, it can give you some idea of what's going on. Both of these things have happened to me on my Eclipse at some point.

 

Thanks for the info! I thought I read that the ECU was under the hood somewhere but forgot where I read it. Gotta love Road Race Engineering when it comes to wiring diagrams!