Cbr 600 O2 Sensor Eliminator
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The Oxygen sensors of all motorcycles are limited to catch the emission standards and in some specific throttle positions will try to alter the fuel mixture to catch the stoichiometric Air/Fuel ratio. This system is designed to improve emissions but has negative effect on performance.
Fitting is very easy, you need to follow the wires from the oxygen sensor to the wiring harness until you find its connector, then you disconnect it and you connect the eliminator in its place. Then you unscrew the sensor from the exhaust and install the blanking plug in its place.For motorcycles that have two oxygen sensors we list eliminator kits that contain two eliminators, you use the procedure above for each oxygen sensor.
It's a tempting thought that it should be possible to make the air/fuel ratio richer by tweaking the O2 sensor signal, but in reality it's just as bad as just removing the sensors (As described above)Some of these products will definitely make the mixture richer, but you are no longer in control of the process and you will usually end up running the bike way too rich and just waste a lot of fuel for nothing.These devices can be divided into two groups: The O2 sensor eliminators and the O2 sensor tweakers:
The simple and cheap O2 (Lambda) sensor eliminators are usually just disconnecting the O2 sensor signal to the ECU, and they only contain a smal resistor for the heating circuit to avoid a fault warning in the dashboard. So they work similar to the O2 sensor removal described above, and they are not doing your bike any good.O2 sensor signal tweakers.The O2 sensor tweakers usually contains some kind of adjustment where you are supposed to be able to adjust the air/fuel ratio.Unfortunately the ordinary narrow band O2 sensor that is used in all motorcycles and cars is not really possible to tweak correctly (Because it is basically an on/off switch), and the air/fuel ratio you want to see is outside the operating range of the narrow band O2 sensor.When you try to adjust the mixture by changing the sensor signal, the ECU will just see the air/fuel ration as being too lean or too rich and will adjust the mixture very rich or very lean (Until it reaches the adjustment limits set by the ECU).So depending on which way you turn the adjustment knob, you will either waste a lot of fuel for nothing or to run the bike even leaner than stock - which could potentially harm your engine.And even if you could adjust the air/fuel ratio correctly this way, you would still get the richer mixture where the engine needs it the least !
Yamaha Oxygen Sensor Eliminator Kit For Bolt 950 use. This kit includes 1 sensor eliminator and comes with EXHAUST BUNG CAP. All sensor eliminator sellers do not offer sensor mount hole cap. Fitment: Yamaha Bolt 950 2013-On Instruction: Why you need oxygen sensor eliminators modification? 1. After disabling O2 sensors, you will gain a vastly improved throttle response and smoother power delivery because your bike has more torque available in this specific situations, and stop the Powercommand & FI2000R fighting with your bike ECM. 2. After bypass faulty oxygen sensor you can use any brand after market exhaust system. Most US exhaust is without O2 sensor mount, so this is the only way to bypass it without FI problems. 3. The oxygen sensor eliminator is also needed to support the FI mods like the Power Commander and it can help all the FI mods to complete. 4. Stock design is O2 sensors of the motorcycles are limited to catch the emission standards and best A/F ratio for environmental and air pollution. This is good for the emissions but not for the performance and smoothness of the engine. After you mod air kit or muffler, you will find popping and back fire. That is air/fuel ratio change and stock ECM can not balance. All the bike shop or your rider mate told you that you get mod Powercommander or SPEEDPRO COBRA FI2000R, but the O2 sensor still research and respon the air/fuel that too rich or lean for ECM. ECM sends this signal to nozzle, then PC3/5 FI2000 intercepts this signal, mod it and send it out to nozzle. After engine ignited, O2 sensor check it and told ECM that mod it to be original. This cycle is nonstop. O2 sensor and your mod PC3 or 5, SPEEDPRO COBRA FI2000 is always in anti and fighting. Installation Easy to install, you only need to unplug the wires from the oxygen sensor to the wiring harness until you find its connector, then you disconnect it and you connect the eliminator in main wire harness side. For the motorcycles that have two oxygen sensors, our eliminator kits have two eliminators. You use the procedure above for each oxygen sensor plug and remove the O2 sensor, then tighten cap in sensor mount holes.
The Eliminator Link Pipe is a cost-effective solution to eliminating the restrictive cat assembly; allowing for a free-flowing system, a huge reduction in heat soaking. Not only does it have these great features but also increases 3-4 hp on its own. These units come with M18 Bungs for people wishing to run wideband sensors and/or autotuners and can include a reducer to run the factory o2 sensor as well.
PLEASE NOTE: Some model years of CBR600RR bikes are not equipped with an O2 (Lambda) sensor and adaptive tuning will NOT work unless additional "My Tuning Bike" module is purchased. Please select in optional accessories.
My bet would be, that without the o2 sensor the ECU will use a standard map based on injector opening time for each rpm/throttle opening combination that shouldn't make your engine run extraordinary rich (or lean). My idea of the thing is that the o2 sensor is just here to "fine tune" the AFR on certain conditions.
The question that I would like to raise is: Will the ECU interpret the signal from the resistance as it was from the o2 sensor? Will it try to correct for the eroneous data that it "thinks" it read from the o2 sensor? Because, if that is correct, the ECU will constantly try to make the AFR richer or leaner (depending on what signal the resistors send to the ECU).
I installed PC III usb and didn ´t have any problems with FI light, untill i installed O2 eliminators... then FI light didnt go off no matter what.. so i unplugged O2 sensors and the bike runs fine with pc III only...
I installed PC III usb and didn ´t hawe any problems with FI light untill i installed O2 eliminators... then FI light was on and didnt go off no matter what.. so i unplugged O2 sensors and the bike runs fine with pc III only...
Both the PC III and O2 sensor help with air fuel mixture. With the PC III you can set your own air fuel mixture ratio. The O2 sensor determine if the air fuel ratio exiting a gas-combustion engine is rich (with unburnt fuel vapor) or lean (with excess oxygen). Information on oxygen concentration is sent to the engine management computer or ECU, which adjusts the mixture to give the engine the best possible fuel economy and lowest possible exhaust emissions. (information taken from Wikipedia)
If you leave the O2 sensor in tact (no eliminator), what ever you set in the PC III will be over ridden by the O2 sensor. There by acting as if you didn't have a PC III. Someone with much more knowledge and better understand can provide a better response or correction to my post.
It's my understanding that the resistors are there to simulate the presence of the heater element in the o2 sensor (the two white wires on the sensor connector), so I suppose that's why they get warm. The other two pins are left unconnected, and present a reading of 0 volts (full lean) to the ecu, causing the ecu to attempt to compensate by going full rich. The power commander then makes the final adjustment to the injectors. Obligatory caveat: I'm not an EE. I just google alot.
The actual bolt size, NAPA # 704-1037 is too small for the closest sensor hole. I didn't try the other hole, I figured it would be the same size and NAPA said that 18mm is as large as they go, so far as drain plug size. I guess I could get a cut off wheel for the grinder and whack em off on both ends but I kinda hate to do that. 2b1af7f3a8