Okay so I started a project and the short version of my question is this: Where can I buy the male and female wire harness plugs for the Oxygen (o2) sensor for a F4i?

The long version is as follows: I have a california model 954rr, not an f4i, but the o2 sensor plug is the same on both bikes(the sensor is not the same but that does not matter in this situation.)

I used a 330 ohm resistor to eliminate the o2 sensor without getting the annoying FI light. The performance increase was incredible and the low rpm cruise was smoothed out dramatically. However, the fuel mileage took a big hit. Prior to this mod I was getting 140 to 150 miles before the fuel light would come on. After eliminating the o2 sensor, I could only get 120 to 125 miles before the fuel light would come on.

It occured to me that I can put the o2 eliminator circuit on a switch with a DPDT relay. Then I could have the best of both worlds with an "Economy Mode Switch". I have gathered all the wire, the relay and the tiny switch that will go inside the left clipon control housing. I would like it to be, basically, plug and play. This is where the problem is, rather than hack up my wire harness, I would like to have male and female plugs, that plug the unit in, between the o2 sensor and the bike's wire harness.

I, initially, thought that Honda cars would have the same o2 plugs as the bikes and that a quick trip to the pic a part would have it sorted. After a lot of google searching and comparing images, I decided to come ask you nice folks for some help. If you know of a model of car that uses the same plugs or if you know where I can source a pair of new ones or have any suggestions at all, please let me know.

Thanks.

Oxygen Sensor side:


Wire Harness side:


Oxygen sensor side:


Oxygen sensor side:

 

I found that Geo metro from 1996 to 2000 and some Suzuki cars, like the Vitara and swift, have the same plug on their o2 sensors.

I will check the pic a part yard tomorow and see if I can get a set.

Wish me luck guys.

 

Hye dude.
Your bike comes with o2 sensor?
so that did you bike have a HISS?

 

Factory O2 sensors are ignored by the bike's ECU under heavy load (ie: heavy acceleration, where most people want to see a performance increase). The O2 sensor is only used to adjust fuel for idle/cruising conditions.

If you are truly seeing a performance increase, it's from something other than the O2 sensor being eliminated.

You're idle has smoothed out, and you're using so much gas now because you're running too " rich ". You'll also find that you foul spark plugs more frequently due to this.

Unless there's some other reason for you to eliminate the O2 sensor, you'll probably find the bike runs much better (and cheaper ) with it in place/connected at all times.

 

Everything you said here is wrong! Please don't repeat what you have only read somewhere (without real world experience). I have 3000 miles of seat time with the o2 sensor eliminated (5000 with it plugged in). When talking about performance it can only be called too rich when the power begins to decrease. While Honda claims the o2 sensor is ignored under all but steady throttle, my real world experience tells another story.

None of your reply helps with the original question. I am not here to debate whether or not this mod works on my 954rr. Please don't troll in my thread by acting like you know something that you clearly do not.

 

I went to the Pic A Part and got a couple of sets (o2 sensor harness plugs), from a Suzuki Vitara. They are exacly the same, except the female end is green. They have different colors on the four wires and the o2 sensor end is a only about 5 inches long. I soldered longer wires and built the device already. I will test it out for a few days before I drill the left clip on control for the switch.

 

(shrug ). Was just trying to save you the trouble of adding an unnecessary switch. Everything I stated above was not "read somewhere else ". I learned it while writing new subroutines in a eprom ecu to have an engine run in a "lean burn" mode under specific throttle position, airflow, and rpm parameters.

It was my belief that if the mod you wanted to do was unnecessary, the connector you were after would no longer be required, and was relative to your original question.

At the end of the day, I'm not concerned with what you do with my advice, or to your bike. In any case, good luck with the project.

 

Well I hate to point out that you are wrong again, but you are. I would like to have the plugs so that I can remove the device if I need an emissions inspection in the future. The same reason why my stock exhaust can is packed away in my garage rafters.

In any case I am done with this project's fabrication and I am now testing it. It works as expected thus far.

I believe that I can help you with your project, far more than you have helped with mine: Your "lean burn" mode could be based off accelerometer input (at least in part), that could eliminate issues you would have of the herky jerky feel of fuel trim in lower gears i.e. (1st, 2nd).

 

so you got the O2 sensor plugs, but where did you find the O2 sensor?. im looking for one..that isnt so expensive.

EDIT: nvm i found one on ebay for 17 dollars which is for the f4i itself. all i need now is an O2 bung and some welding

 

hey lasvegasharley can you give me some updates how does your bike feel with the O2 sensor on or off?