Wideband O2
 

I've been working on my MAF conversion on my ('93, f-150, 393 stroker, E4OD) truck for way too long. I just have a couple of questions that I can't seem to find.
I've purchased a pcm for a '95 5.0 E4OD, WAY1 (F5TF-JB), and am wondering about the wideband O2 sensor. Do I need to have duel O2s running, b/c I'm running true duels? For that matter; duel gauges, are the gauges even needed? And, does the wideband have to have a digital serial output? I assume that it should, is I am having to burn the pcm (Moates I'm pretty sure) Also, do I need to keep the stock one going to the pcm, or can I wire the wicked expensive one (pair) into its place?
So Many questions... Still

You need to keep the original 02 sensor hooked up , just put it in the pass side pipe , then put the wideband sensor in the other pipe , you need a gauge to read the AF ratio , don't know anything about the moates tunner.....Lew

Here's what I did. I used an A9L computer, which has inputs for 2 O2 sensors.

• I retained the 1 stock narrowband O2 sensor on the passengers side & ran its signal to the ECM. I then ran a jumper from that pin to the pin for the other bank O2 sensor. Both inputs to the ECM are coming from the same O2 sensor. I figured if one sensor was good enough for truck from the factory then one sensor should still be good enough.
• I installed a wideband in the drivers side exhaust (nice & close to the header so it would stay hot). I ran it's output to a gauge.
• Here's some additional information that pertains to my specific equipment. It will help if you happen to be using the same stuff. I'm using an Innovate LC-1 w/ a Innovate DB gauge. The LC-1 has two outputs. From factory one of them is 0-5V and the other mimics a narrowband signal. I could have used the narrowband mimic & ran it to my ECM, but I was concerned about the reliability of the wideband. Instead I reprogammed the LC-1 to make both outputs 0-5V using the supplied software. I ran one to my gauge. I ran the other to my EVP wiring. Since I've removed my EGR I used it to feed the wideband signal to my laptop via a Moates QH. If you use Binary Editor theres a dropdown menu on the Hardware tab where you can tell it to that the EVP signal is really the air fuel ratio. Doing it this way keeps you from having to use a separate datalogger for your wideband.