We have someone else that did the O2 delete but we haven't figured too much out yet lol
His mileage dropped quite a bit
https://www.rzrforums.net/rzr-xp-tu...net/rzr-xp-turbo/534120-o2-delete-now-my-fuel-mileage-seems-worse-thoughts.html
As Rzrjoe stated if someone ran avgas it could damage the sensor as well as the cat.
I have pictures how much a cat retains the heat.
I gutted my cat but I'm not going to tell you to do it.

 

You can see hot hot the muffler gets with the cat in

1497559378298_temp1_zpsqtcrlk0f by 185 EZ, on Flickr

 

185EZ, I've been keeping tabs on your cat delete, so much so that I pm'ed you asking about it but I think your pm box is full as you didn't get back to me. I'll have to read that thread you linked...

Bought from an old man and for all I know he may have run 85 octane but did say he used 91...

 

I apologize for that. I may have forgot to get back to you and i just deleted 1000 pm's this year.
I have plenty of room, lol.
You have 256 messages stored, of a total 10,050 allowed
Cat delete isn't difficult. Main thing is to have a welder or mark where you cut and take it to someone

 

In my research it seemed like o2 sensor failures came up often, but considering the amount of members here, it's probably just a drop in a bucket.

 

So EZ, you thinking the best I should do is replace the o2 sensor and also delete the cat? I think that's the route I'll end up travelling. Yes, I can weld it up with my Hobart MVP210.

 

Me? I would try the O2 delete before spending $120
RZR o2 Sensor Blockoff Kit

If you want to do an ecu flash I believe Aftermarket Assasins has the delete in their tune
I just did the Dynojet tune but it doesn't delete the O2

As far as the cat I would delete that on any ride i had.
I think intoxicated had a meltdown with his muffler
I won't actually "tell" someone to do it though if you know what i mean.:big-grin

 

Yeah, I've studied up on the cat delete so I know how to go about doing it. Thanks, EZ....wink, wink.

So you're with me in trying the o2 delete? I probably won't flash ecm anytime soon as the bikeman has a resistor so it tricks the ecm, yes? So that other thread where guy who did the o2 delete claiming to get worse milage, a fluke on his part you think?

 

Ya we don't know what the other guy did with the delete
Limited info to go on so far
That's one of those problems we all would like to know and how to fix it

 

I really think you should try the bikeman delete
Then let us know
So I can do it, lol

 

I think I'll call Bikeman tomorrow and pose some queries, that is, unless someone can furnish me with a value resistor to wire into the factory harness. Then I'll just leave the bad o2 sensor in....


ETA: No, I didn't mean for the to read as though I was gonna ask BM to give me values and not buy from them...

 

that is, unless someone can furnish me with a value resistor to wire into the factory harness. Then I'll just leave the bad o2 sensor in....

A resistor wired in is not going to fool the ECM. You will probably set more codes than you can shake a stick at.

 

I just bought my 16 xp about a month and a half ago. When i got it home the engine light came on as soon as i unloaded it. It had the o2 code in it. I changed the sensor and its been good since. The o2 delete us just a resistor. The o2 helps with fuel correction.

 

So then the bikeman delete would only be good in conjunction with an ecm tune then? That's what I was afraid of and sort of a reason I posed this to you all.

 

I think they upgraded the newer models to a wideband O2.
Mine is the narrow band.
Doesn't do too much in way of changing fuel tables.
It's either rich or lean or stoich
Just heard from Dynojet.
I asked if my tune removed the O2 circuit and it doesn't.

Our tunes are all designed to retain use of the stock oxygen sensors. We cannot suggest ways to disconnect them... Nor would we recommend it.

 

So I'll just replace that some'bitch! Tried calling Bikeman, busy. Emailed them and waiting to hear back but looks like I'll just replace it, even though it's narrow band and doesn't do much...from what I gather anyway.

 

Hold on
2wheel pros has it for like $90?
Also place a WTB in the classifieds
There are guys who went with aftermarket exhaust and not using the O2

 

Ordered o2 sensor from Partzilla. Thanks all...

didn't order from 2wheelpros because their online reference was wrong for the part number and year for my machine...4016021 is the correct part number that supercedes 4013979. I called to inquire and was told it wouldn't work. I told them it will. They went to Polaris website, even called out my machine and proved me right but still referred back to their website being right?

Ordered from Partzilla.

 

Just a quickie update. I replaced the stock o2 sensor and tried clearing the old code via the Ride Command to no avail, but a minute of letting the RZR idle, the code cleared itself.

While I was at it I removed my exhaust muffler and gave serious consideration to hollowing out the cat but decided for now to just leave it in. Mostly because I had my SuperATV rear bumper to install and didn't want to delay myself. Of course if I change my mind later it'll be more of a pain having to remove the SATV bumper and then reinstalling it all over again. So I'll probably just leave her be.

Also, with the o2 trouble code my RZR didn't go into any sort of limp mode as things felt exactly the same after I replaced the o2 sensor. But at least now I no longer have a pesky code in my system.

 

Deleting the O2 sensor is a bad idea for numerous reasons. Not a common issue but if the sensor goes bad replace it.

 

At first I thought it was a common occurance, hence my desire to delete it. But now I see it's few and far between so I'm glad I decided to just replace it. It didn't seem to be hurting anything with it being bad, but it's worth it having everything working in proper order.