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Perfect PCIII install

75K views 290 replies 139 participants last post by  Roldas  
#1 ·
Updated 8-04-06

This install covers ALL years of Warriors to date.

If your Warrior cuts out, has dead spots, a wacky throttle response off idle or a dyno tuner that goes nuts trying to get you a good custom map follow these instructions. It will fix 99% of these issues unless you have a broken CPS.


Many people have experienced that the PCIII setup as described in its manual is not perfect. The TPS read out in particular is a problem. Instead of a steady TPS signal the PCIII (regular and USB) jumps around pretty wild. This causes not only shops to do custom maps to take a lot longer to get it right but can also lead to less than perfect throttle response of your Warrior.

The solution is very simple and is highly recommended for EVERY Warrior PCIII owner.

IMPORTANT: When looking for the right wires please make sure that the first color is the base color and the second on is the strip on it. So black/blue for example is a black wire with a blue strip.

Start with the gray PCIII TPS hookup wire: Pull it back through the insulation to have it come out pretty close of the PCIII. Depending on where you install the PCIII you only need a few inches of gray wire. Check first before you cut it too short.
Now locate the solid yellow wire that runs into the ECU. Be aware that there are several wires that have a least part yellow marking on them. There is only one solid yellow wire (it might have some gold markers on it as all the wires).
Cut that wire, take the insulation off both ends, twist the gray wire around one of those ends, push a piece of shrink tubing over the other yellow end and solder the connection back together. Last but not least push the shrink tubing back over the solder joint and heat shrink it.
The second connection that is even more important is the PCIII digital ground. The Warrior uses a digital ground wire for all its sensors to reduce noise. The PCIII comes with a digital ground wire but unfortunately as it is sold it is connected to regular ground. When you pull back the insulation of the PCIII ground wire you will find two wires ending at the ground connector: One is black (regular ground) and the other one is black/white (digital ground). Cut the black/white wire and pull it back to the same exit you used to run the gray wire. The black/white wire will need to be approximately the same length as the gray wire. Now find the black/blue wire that runs into the ECU. There is only one.
Do the same thing as before but now splice the black/white (PCIII) wire into the black/blue (ECU) wire and heat shrink the solder joint.
Install the PCIII in its final location and you are done.

Now when you hookup a laptop of dyno computer to the PCIII the TPS signal on a running Warrior should be rock steady and the bike should run cleaner and very crisp. If not you might adjust the map you are currently running.

Hope this helps!

Oliver
 
#206 ·
Just finished my "perfect" install today. Installed PCIII yesturday and did the map upload and adjusting today. Reset the idle and set the full throttle position. One thing I noticed, I couldn't get the %throttle on the main page to stay still untill after I set both idle and full open throttle positions. After I did both the %throttle stayed at a rock solid 0%. So it is now "perfect". Thanks to everyone that posted on this subject. I had to read the entire thing end to end to fully understand what I was doing but in the end it ALL helped a lot!! So huge thanks to everyone!
 
#207 ·
Ok ,I did the perfect Install, Now I have no green bars for the adjustment showing. What happened.

Its acts like it is dead. no lights with the motor running or off or anyother comb.

How would I check the pc3 to see if it is bad.
By the way, I put all wires back to stock and still no lights.

If it is bad, is there anything like ecu or proformance thing that would be better to us than a pc3
 
#209 ·
Davan, already did all that stuff. So call mr.tubo(are pc3 dealer and installer and dyno man.) well he said it was no good and he'll order me a new one at 250.00 plus a new tune for$200.00.
I didn't like that answer he gave so after 10 minutes on the phone with my yamaha mech,I find out that the expert from mr turb don't know S$%^. They pluged the pc3 back into its self so it has never work. I complained about it several time and they said they checked it and it was dead on. That was 2 years ago.
I pluged it in the right way per the direction and all is fine.


only good thing I can see out of this is I sorta just got a new pc3 sense it has never been used.

Oh and my yami mech. is dyno it tommrrow.

He did say that he seen alot of this from other dealers/installers that don't know so If you have any doubt look at your wiring harnss and make sure at the y on the harness doesn't plug back into it self for anybody that reads this.

I actually am a have ass mech and should have know something was wrong but just wrote it off as the nature of this bike. It has been running on the factory setting this whole time
 
#211 ·
Put pcIII on my 06 with V&H Pro Pipe 2/1.... the 2007 PCIII on the instructions from Dyno-Jet show a TPS plug-in setup, the same as the injector plug-in. I didn't have the TPS plug-in so I did the "Perfect Install". so I guess Dyno-Jet finally got wise an is using the digital interface now. Thank everyone for the great info on the thread.
 
#213 ·
Instead they make me send in my PCIII to upgrade the firmware... [/emoticons/emotion-6.gif]

All of you interested in the Data Hub whatch out if your PCIII has a firmware before 1.0.20 you can install the software. Thats of course only in the small print.

Glad it works for you.

One more thing: For all of you with the perfect PCIII install: Make sure you get your TPS recall done! What a difference! Finally got around to swap out the TPS on the turbo. I can't believe how much better the bike is running. Always thought the turbo was the reason for the occasional hickup, not the case. It was the old original TPS. Well worth it. If you have the tools you might even do the recall yourself - if your dealer lets you do it. Re-installing the new TPS using the PCIII readout is so much more accurate than using the onboard diagnostic.
 
#214 ·
UPDATE: I redid using 18gauge wire, and it works, for some reason I think the bigger wire interfered with the signals, so guys, if you haven't done this, make sure and use 18 GAUGE wire, not 16.


Tried the perfect pciii install, following yours and redhorses directions. I did the t connect and I used 16 gauge wire instead of 18. Go to start bike up and black smoke and smell of gas. Not GOOD.So now I freak out and am thinking of returning back to regular install. Here are some pics maybe the gurus chime in, maybe even someone in cleveland,tn chattanooga area would help w/trouble shooting.

Basically the grey wire that goes to injectors was not connected 2 anything, I spliced blk/white digital ground in a t with blk/blue into the ecu. I spliced grey wire on pciii side in a t connection with the yellow tps wire that goes into ecu.
thanx guys
 
#215 ·
Ok, now I'm intrigued. I came back into this post because I couldn't believe that it was viewed over 27,000 times! That's a lot of PCIIIs I thought. But now I see it. It also has to do with the TPS? I'm sure I need to get this done and with Tahoe coming up I wonder if I can get it done by then. I'll call the dealer. Thanks Oliver! I wonder if John would be willing to tune the bike while it's there once they install the new TPS?
 
#217 ·
quote:Originally posted by vall345

Frankenstein (Oliver is it?) Thanks for the great tip on the PC III rewiring. It was a pain in the rear, but really worth the effort. Besides the rock steady idle position, the hesitation and loping idle has disappeared. Also, my fuel economy has increased. Probably due to the elimination of the false enrichment. A couple of tips for those of you who haven't done this mod:
1. There is not a lot of room for error on stripping the ECU wires. No surplus, so make sure you are real handy at stripping and soldering.
2. Use a somewhat oversize shrink tube. I used stuff that was too small, and guess what???? It shrunk while soldering and I had to really force it over the splice.
3. Make sure that you hook up the PC III internal ground (black w/white tracer) to the ECU black w/blue tracer wire .....NOT the blue w/ black tracer wire that I almost cut into. STUDY 10 times before making any cuts.
4. Set ZERO Throttle position with engine running. Trust me, it will be rock steady at zero after this mod.

Again, thanks SOOOOO much for the help on this one!

Sam Vallas
Orange City, FL




I did the install last night and I loaded the map for my bike,Am I supposed to set the throttle position on it it reads -20 with the bike off I havent started it yet. not sure if I am supposed t omanually do any settings on it also. thanks
 
#220 ·
FIrst you need to set the idle to 0 inside the PCIII software. You Can do 0% with the engine idling. For the 100% mark the engine must be stopped but the ignition must be on.

Now as far as the erratic idle. A little bit jumping around is totally normal. You will not find a Warrior that is perfectly set to one rpm. +-50 rpm I would call normal. A correctly installed PCIII with the throttle positions set to the correct values will help.

I assume you have done something like a BAK and pipes? There are many things that can go wrong when you do those mods. With the BAK for example there is always a chance that someone creates a vacuum leak if any of the vacuum hoses are not hooked up properly. Specifically with CA bike and its charcoal canister. If you have one of those make sure you plug that vacuum line that used to run down to the canister and do NOT hook it up to anything else or the tank! Vacuum leaks will make the bike idle less than perfect and will throw off the throttle body sync.

Hope this helps!
 
#221 ·
Thank you very much, I just finished up the throttle idle set to 0 And I did the 100% not sure waht the reading was at 100 but I did do it according the to tutorial, I am pretty sure my idle did settle a bit right around 900 give or take prob. within the 50 you said.Getting ready to take her for a ride yeeee haaaaa. Oh I have a 02 and I only have cobra shotgun lo-boy exhaust on it with baffles in it and pc3 usb of course haha. Man I just want to keep doing mods now. What reccomendations do you have for me to do next and is there anything else I need to do with the power commander settings or do I just wait for more mods to be done. thanks again
mike
 
#224 ·
quote:Originally posted by whynot

I was wondering if it is ok that it still back fires either when I am slowing for a when I am shifting, is this normal?
And My next project will be the big air kit mentioned above and should I do the ais block offs along with it, and what is the purpose of the block offs?
mike


If you don't have an air kit yet, see if you can find a map on the DynoJet site that matched your pipes. Worked well for me.
Yes you should do the AIS when you install the air kit. You don't have to, but cost is minimal, you get rid of a bunch of junk you don't need and this will allow you to clean up the left side when you get the desire to.
 
#226 ·
Thank you very much Oliver and everyone else that replied.My list of mods are 1-big air kit 2-ais block off 3-handle bars not sure which ones though I need some that wont have me reaching so far forward. Integrated tail light along with putting my plate on the side of the bike. And this winter I am going with either a 260 or 280 kit.Oliver if you can recommend and certain maufactorers for these mods I am going to do that would be great. thanks again
mike