Another PC111 question

I just had a PC111 installed on Tuesday and it seems to have helped the surging and throttle response problems. My bike is completely stock otherwise. When I ordered the PC111 from the dealer a couple of weeks ago they gave me a great price on it and said they would install it when I brought it in for my Spring checkup. For some reason I let the advisor tell me I didn't need the o2 sensor eliminators. I spoke with another advisor that I know pretty well that works there yesterday after the install was already done and told him what happened and he put them on order right away. As of right now the bike runs great and I am wondering if the o2 sensors will make it even better or is it just something everybody does because "everybody does it"? I can imagine right now the o2 sensors are telling the ecu that the mixture is too rich then the ecu trying to lean it out and the PC111 blocking the message and just pouring on the fuel.:faint: Thats a lot going on in there, but is the only advantage everything agreeing to just pour on the fuel?

 

I've read a couple things. Some say that with the O2 sensors still in place they override what the PCIII is doing. I also read that after a short time the FI error light will turn on and won't shut off until the O2 elliminators are installed.

I decided not to find out and just spent the extra $30 and installed the O2 elliminators.

 

if you like they way it runs now and are satisfied with it. no hesitation off idle stumble runs great leave it alone. the computer has the last word..i put leos on mine disconnected pos on battery reset and i dont have the hesitation as much now or the bike needs some miles to break in and adjust it runs better now then at new strange but its true; hesitation is almost non-existent stk comp..and whats the spring check up?? i couldn't find that in my shop manuel or owners manuel....good luck

 

You should install the O2 elims. And that is according to Mannie at Leo Vince technical support - and he used to work for DynoJet, so that's even more authoritative.

 

i guess you are saying i should install o2 elims but i don't have the pc111 .. or where you talking to alter egohe has stock exhuast with pc111????:usa2:

 

Thanks for the input. I think I'm gonna put them in. It seems to make sense to me that if you have the PC111 altering the fuel to richen up the mixture the O2 sensors and the PC111 will be working against eachother. My luck the FI light will come on during some Sunday when I'm more than a few miles from anywhere!! For $30 I'll go the extra step..... How about that fairing. I heard the clips are tricky. Anything I should know before I start trying to get that side off to do the install?

 

Mannie said that the PCIII doesn't work properly without the O2 elims. I don't think the O2 elims are necessary w/out the Power Commander.

 

Remove left fairing and all will be exposed for the O2 elims,

 

The clips are a piece of cake, just push in the middle portion and they come right off.....I'm having a hard time understanding what started the myth that these clips are hard to deal with.......

 

FWIW, I called Dynojet customer support and was told you don't need to O2 eliminators if you don't have a California bike. I did not install them on my '04 and thought the PCIII worked wonders for the lean mixture at low RPMs. Since I haven't installed the O2 elims I don't know what, if any, improvements might be made by their installation.

 

alter ego,
Clips are easy,as Norcal has stated,but they are expensive if you break them.
I placed mine in the floor after sucesfully removing them,only to step on and destroy 2 of them.
Cost me 10 bucks to order 2 of those little buggers!!!

 

I don't believe there is such a thing with the 6th gen, they're all so-called "California" bikes, aren't they?

 

I think they are Kevin. All 6th gens come with cat, 02 sensors, PAIR system, and EVAP canister. That would make all 6th gens "cali" bikes I think.

As far as the O2 sensor eliminators. I saved $30 and made my own from a how-to guide on vfrd website.

All you need to do once you've unplugged your oxygen sensors from the wiring harness is buy a couple of 330 ohm resistors from Radio Shack. Take a resistor and bend it into a U-shape and fit it into the empty slots opposite the clip-on lock of the harness. Do the same thing with the other harness from the second O2 sensor.

There are pics and tutorial in the how-to section of the vfrd website for a better understanding of what I'm talking about.

 

This is the route I went as well. I check them during every oil change to make sure moisture hasn't snuck in since they're just all taped up, but it's a cheap 'n easy way to go for sure.

 

damn mines a "cali" bike i'm sellin it....................but i think the cali "fruit" bike hasd CA on the frame....

 

Have a link? My PCIII just arrived and the LV's should arrive sometime next week. I've looked on the Power Commander web site for the proper map but don't see one with my setup - 05, stock air filter, LVince exhaust, 02 eliminators. ...this is not a European bike either.
Curious to know what others have used for their maps.

edit: found this one ...

http://vfrworld.com/forums/mechanics-garage/10429-bogging-down-around-4000-4500-rpms.html

 

I am using the Staintune map with the same setup. It's fine. Don't bother trying the map for the Euro bike with the LV. Too rich.

 

hey cool. Thanks for the info. I was hoping to find someone with the same setup. :usa2:

 

which one did u use?
49 state and California model, Staintune slip-on exhaust and Dynojet 02 sensor eliminator kit
---or---
49 state and California model, Staintune slip-on exhaust (with restrictors) and Dynojet 02 sensor eliminator kit

 

The first map with no EVO II restrictors and no spuds and 2 O2 eliminators. Voila! No flat spot and no snatchiness at small throttle openings! A couple of other guys here exerienced similar results with that map.