PCIII Owner/User Help

[kippnidaho]

I currently have a 2005 with TORS and K&N filter. I also have the PCIII all of this was installed on the bike when I bought it. It is running rich, inside of pipes are black.
I was debating whether to just get rid of the PCIII and get a Triumph tune or maping for it, not sure yet??
Driving home last night the idle is now non existant if I let off the throttle it dies, I can keep the rpms up manually and it is ok.
So I am looking for assistance and advice from the group.. Help
Kippnidaho

 

[3ngin33r1]

I don't know much about the PCIII but aren't they tune specific?

So when you had it initially mapped out, it was done with whatever tune was in your ECU.

If you take it in to the dealer for service and they load a different tune, whatever the PCIII is doing no longer matches.

I'm just guessing though.

It's possible that the PCIII has nothing to do with your idle problems, you could have a stepper that needs adjusting.

 

[Pig9r]

Bad O2 controller possibly. If it connects to the PCIII it is the old style. Dynojet has since upgraded them.

 

[TxRIIIRider]

Also... try the Euro TORs/cat bypass tune from the DynoJet, tune # M510-502. It is leaner than the M510-503 tune and I have had great results running that tune.

 

[kippnidaho]

Ok, I hate to be dumb but..
Pig9r
How do I know or find out if it is the O2 controller or if I have the old style PCIII.
RxRIIIRider
How do you obtain the DynoJet, tune # M510-502. And then how is applied. And will that effect my idle?
I also forgot to mention that the bike has the Cat Bypass..
Thanks guys
Kippnidaho

 

[Pig9r]

I believe the older style has a wire and is connected to the PCIII?

 

[TxRIIIRider]

The DynoJet PC-III software and all of the fuel maps can be downloaded for free from the DynoJet web site.

The Rocket III fuel maps are available here:
Power Commander Downloads and Product Purchases, Maps, Installation Guides, Accessories

The DynoJet PC-III software is available here: You will need the PC III USB Control Center Software
Power Commander III USB Downloads

The instructions are there as well. The PCIII connects to a computer via USB cable. You can either load the software along with your selected tune on a laptop and bring the laptop out to your bike, or if you don't have a laptop, you can remove the PCIII from your bike and hook it up to a desktop computer. The PCIII has a space for a 9 volt battery to allow you to program it while off of the bike.

The PCIII will not help your idle if you're having idle problems. The idle problems may also be the throttle position sensor. I recently had one replaced. Also, Triumph has a re-call tune that is supposed to take care of the idle issue you describe. It raises the idle RPM to about 800 RPM.

 

[Power-Tripp]

You can also download the acceleration compensation enabling software from the Power Commander site - http://www.powercommander.com/downloads/general_downloads/accelerator_pump/PCAccellPumpEnable.zip

This will let you lean out idle and cruise, and still have enough enrichment to accelerate smoothly. It doesn't let you define the compensation over its range (like some of the Tune Edit tunes do), but it does let you enrich or lean the overall compensation for acceleration.

The New Triumph "Fix" for the idle issues may or may not work well on your bike. I have seen a few R3s that simply need to replace the TP sensor for best results, but raising the idle does help.

 

[KingOfFleece]

Could you explain that a bit more? I have the stock PC3 in my bike with the jardine tune and it runs great-but I'm quite sure I'm a bit rich as my mpg went way down after the PC 3 was installed-but performance went up! so I'm happy.
I was planning on having the bike dynotuned this spring but maybe I just need to download this?
Thanks, BTW, for sharing your knowledge. I know I learn plenty form factual posts.

 

[Power-Tripp]

The Power Commander lets you adjust/offset the main fuel tables in the ECU. However, when you are cruising along and suddenly grab a fistful of throttle, the engine wants more fuel than it did just a moment before (at steady state loads). The MAP sensor detects a drop in manifold pressure and tells the ECU to add more fuel for acceleration.

The link I posted above gives you the ability to tell the ECU to add more or less fuel when you suddenly accelerate from low engine speeds. This can be used to improve throttle response and/or to improve cruise mileage. Most PCIII owners (and even many tuners) don't know that this application even exists, or how to use it for different things.

What this means is that you can tune the throttle position/engine speeds at idle and where you cruise much leaner, and still have the ECU add enough fuel to get good acceleration. Most bike engines today will run very well (and very safely) at low loads (cruising) when tuned very lean (as lean as 26:1 AFR). The manufacturers can't do this because it raises the total hydrocarbon and NOx emissions, but there is no reason why you can't have your cake (performance) and eat it too (with improved fuel consumption).

[And doing this keeps the pipe tips and sparkplugs from becoming black with soot.]

Clear as mud now, right?

I can add a good bit more details, but it is easy for you to tune for lean-cruise if you know how. Another thread would be a better place to go into details.