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-   -   Haltech Simple O2 Question (https://www.rx7club.com/haltech-forum-62/simple-o2-question-751236/)

Frostycrowd Apr 25, 2008 09:28 AM

Simple O2 Question
 
Okay I am going to hook up closed loop 02 control on my E6X, I have a bosch wideband sensor. What wire from the sensor do I run to what wire on the haltech.

Looked through manual and post and couldn't find 100 percent straight answer

fritts Apr 25, 2008 10:25 AM

Do you have the control unit for the sensor? If not you also need that. Your going to use the voltage output from the control unit connected to your spare AD, or the trim wires for ground and signal. The closed loop control does not work well from a wideband on the O2 input, (at least that's what I have heard, have not tried it on an E6X).

C. Ludwig Apr 25, 2008 10:40 AM

On the E6X the closed loop input needs to go in through the O2 sensor input. Can't use the Spare A/D with the E6X for closed loop. Most controllers have a simulated narrow band output. Use that. Setup the E6X for a narrow band input.

Frostycrowd Apr 25, 2008 01:43 PM

Okay I have a plx control unit and it has a grey wire to simulate narrow band, so I just wire this into the o2 wire on the wiring harness? Is that all that needs to be wired (I understand I need to set the program up). Which color should the o2 wire on haltech be?

Frostycrowd Apr 25, 2008 02:56 PM

Ok well I can only find 2 plugs open, the spare AD and Trim. I can not find the o2 wire, and really have no idea where to look for it.

I wish I wired this car up originally so I would at least know where to look.

classicauto Apr 25, 2008 03:19 PM

Its there.

Previous owner may have trimmed it back.

FWIW though, you should be able to fine tune the main fuel map enough that closed loop will provide extremely minimal benefit during cruise. My car runs no closed loops and 15AFR's while cruising, dipping down as the load goes up. To run closed loop on the E6X, I would be running richer since it would be targetting closer to 14.7AFR during closed loop operation.

Frostycrowd Apr 25, 2008 04:22 PM


Originally Posted by classicauto (Post 8131745)
Its there.

Previous owner may have trimmed it back.

FWIW though, you should be able to fine tune the main fuel map enough that closed loop will provide extremely minimal benefit during cruise. My car runs no closed loops and 15AFR's while cruising, dipping down as the load goes up. To run closed loop on the E6X, I would be running richer since it would be targetting closer to 14.7AFR during closed loop operation.


Yea I but I do not know what it is suppose to look like. And I agree that tuning the map can have great benefits but I want to hook this up for now.

fritts Apr 25, 2008 08:53 PM

Follow the O2 pin on the diagram below to its wire. Pin 2 its a shielded grey wire.

http://www.haltech.com/downloads/e6x_wiring_diagram.pdf

Falcoms Jun 27, 2008 03:59 PM

Hey, quick question for anyone on this subject. I'm running the innovate haltech wideband o2 sensor, and I have the o2 output hooked up to the o2 shielded wire to the e11, but I'm just wondering what the target voltage of 14.7 is on this particular setup.


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