How in the hell do you get the 02 sensor plugs disconnected without just destroying them? Where do you install the 330 ohm resistors? My plugs have four terminals each. Must you install two resistors per plug? Or do you just bridge two wires in each plug and if so what are the wire colors? I'm right in the middle of this project and now have to wait for a response. I'm fixin to try and disconnect the evaporator canister and associated hardware, guess I'll be back on here in 30 min. with some more dumb ass questions!
My Gawd, thanx so much Action!!!!! Used the advice and pictorials and as you said, didn't take but just a few minutes to get the job done! I replaced the tape with some audacious rubber vacuum cups from the local parts store. Plus I used zip ties to seal everything up. I didn't take the bike out for a trial run but did run it up in the garage and it seems so much more responsive, I'm gonna take it out tomorrow onto the interstate and kind of ring it out and see what it does. I was also going to remove the evaporative canister and all associated hardware but hell, after I lifted the fuel tank it looked like an octopus orgy under there, plus the benefits of undoing all that crap are marginal at best so I thot what the hell, just leave it alone! I've not read any neg or pos responses as far as performance goes to dismantling the evaporative canister so I'll leave it be for now!
Are you planning to run with no O2 sensors and keep the catalytic converter... Poor catalyst! Seriously, you might consider parting with it as well or run the risk of it eventually getting too hot and melting or something since there will no longer be anything correcting the engine's A/F ratio. It might be fine for a while (or forever, who knows...), but it's the principle of the matter I guess.
Oh and eliminating the O2 sensors might affect how the engine feels at part throttle cruising or "normal" acceleration--perhaps in a good way... perhaps in a bad way... hard to guarantee anything. I've certainly felt good and bad changes when playing around with the O2 sensors on cars. Usually though it ends up making things feel perhaps a little smoother. However it will make absolutely zero difference when you're running wide open because the ECU enters open-loop mode (i.e. ignores the O2 sensors) at full throttle. In other words, don't expect horsepower or torque to change on a dynamometer.
Well dookey!!! Thot I'd cure one problem and come up with two or three more! This is the first I've heard of the cat wanting to melt down cause of no 02 monitoring, kinda makes since I guess. I'm old school mechanic and all this new fangled ECM, MAPS, 02 sensors, R&R overheat, cat convertor, and what ever the hell else that can go wrong with this bike is just a bit over whelming. Hell fire, I just got rid of an 06 Katana because of a whole shit pot full of carb problems. Thot I'd step up into the world of modern technology and I'll be damed if I ain't gone and opened up a whole can of worms!! Sooo, should I hook the 02 sensors back up?? Gut the cat?? Or drop back and punt??
i installed a pc3 and 02 elims while keeping the stock header...it didn't do anything out of the ordinary. the cat never got hot and the header shows absolutely no signs of overheating.....i have it hanging on the wall of my garage and it looks brand new.
I've read numerous threads about 02 eliminations and how they help the throttle response. I've yet to read one bout something overheating and cooking the bike or any associated equipment. Just hope it's not forthcoming on mine!!!! I paid $1.00 for five resistors today and installed them. You can go to dynojet or is it dynotune and pay $40 for their 02 elimination kit and do the same thing, right? They don't mention anything about the cat overheating or any other complications, sooooo?
Wasn't really expecting any gains torque/horsepower wise. Just want to smooth out the throttle response and eliminate some of the hesitation/stalling that I'm experience. thanx for the input tho!
Out of a gazillion threads on this topic this is the first I've heard/read about overheating the cat or any other piece of equipment by eliminating the 02 sensors. Could you please elaborate?
I know of one guy that had a problem with his cat,and that was because he completely gutted his exhaust and his cat burnt up and caught fire. It destroyed his bike but Honda worked with him and replaced it. I think that it had something to do with debris from the gut falling into the cat. I've ran mine with gutted pipes and 330 ohm o2 elims for over a year and a half and have had zero problems. My thottle has smoothed out and there is no more dead spot around 5000 rpms. I also removed my evap canister for easier access to the oil filter.
That's good to know. I've yet to gut my exhaust, I may or maynot, will just have to wait and see. Gonna take mine out for a test ride this morning and see how it runs with the 02 mod.
On the O2 sensor plugs. If you put the 330 ohm resistor in, what happens to the other wires in the harness? They are not connected. Could be Im looking at the pics wrong.
From what I understand, they are not needed. If you look at the wiring diagram it makes more sense on why just putting resistance on 2 of the 4 wires works. Action
Could be that you are looking at the pics wrong. Trace the wires from the O2 sensors to the connectors. Once disconnected the resistors go into the bike side of the connectors (the ones to your left). The O2 connectors are just taped up. Once the resistors are installed tape the connectors, pull the boot back over everything and you should be good to go. It does make a difference in the way the bike responds, it's so much smoother. Hope this was of some help.
Thanks guys, the light bulb just came on. O2 harness makes sense now. I installed the resistors and changed the sprockets and chain. Feels like a new bike
