New Power Commander S4RS

[hypurone]

Thats strange, the guys ive met with a DPECU says it makes the bike run so much better all around, i guess its casue their bike was running like crap to begin with and any improvement is a good improvement lol.

Well, for the average rider it is probably not an issue as you pass right thru the trouble spots on your way up to the real fun. But there is a bit too much fuel down low and early mid, for a crisp and smooth running engine. Also, the off/on throttle response was a bit ragged if you tried to ease into it. If you just hammer it all the time, you are good to go!! 

[dbran1949]

This IS a race system and is mapped for the track and higher rpm. The DP ECU is pig rich. This is exactly why I added a PCIII. Though you might get lucky and be able to get the CO adjusted leaner and get away with it but it wasn't that way for me. If they ran the CO lean enough to smooth things out down low, it hurt things everywhere else. I highly recommend a PCIII and some dyno time. The extra HP and torque doesn't hurt either! 

Nope not true, see above.

Hypur
I know we have communicated through the board in the past (TOB). 
Which PC III did you use?
Does it work by tricking the DP ECU into thinking it is at a different RPM and throttle opening, or does it somehow override the DP ECU map?

I am almost embarrassed here in San Diego, when sitting at a stoplight I can smell unburned fuel in the exhaust (the guy in the Prius next to me is franticly texting his girlfriend about my extra large carbon footprint)

[hypurone]

Hypur
I know we have communicated through the board in the past (TOB). 
Which PC III did you use?
Does it work by tricking the DP ECU into thinking it is at a different RPM and throttle opening, or does it somehow override the DP ECU map?

I am almost embarrassed here in San Diego, when sitting at a stoplight I can smell unburned fuel in the exhaust (the guy in the Prius next to me is franticly texting his girlfriend about my extra large carbon footprint)

Funny! A PCIII "intercepts" the signals to the injectors being sent by the DP ECU (or any ECU for that matter) and "modifies" them according to whatever map is in the PCIII and then sends that newly modified signal on to the injectors. All in a millesecond or two... 

Forgot to answer your ? on which PCIII. I would have to go look up the part number but just get the one for the M1000ie, it works trust me.

[Carman]

Looks like another 'refinement' for this winter 

[vstryker]

if you unplug the O2 sensor, will he PC3 allow you to tune it under the 5250rpm and 19% throttle restriction? or is the new PC3 map locked or closed off for adjustments in that range?

[hypurone]

if you unplug the O2 sensor, will he PC3 allow you to tune it under the 5250rpm and 19% throttle restriction? or is the new PC3 map locked or closed off for adjustments in that range?

Well, the above scenario was for a bike running a DP ECU which means the O2 sensor has already been removed. If you remove the O2 sensor on a bike with the stock ECU, you will get a check engine light constantly. But other than that, yes, you will have full range of adjustment but only with the earlier M1000sie model of PCIII!! The newer models out now are restricted.

I just went thru my receipts and the part number for the original unit that is not locked in any range of adjustment: 717-411

[DesmonsterS4RS]

This IS a race system and is mapped for the track and higher rpm. The DP ECU is pig rich.

I learned this the hard way when I got the DP ECU installed. I thought I had a defective ECU or something but it's just how it is designed. With a little fine tuning my dealer was able to minimize the annoying effects at low RPM's a 14t sprocket made a big difference also.

I was just looking at these PCIII's earlier and I noticed this "Note: Power Commander will NOT allow fuel adjustment below 19% throttle and below 5250rpm unless you have the DP ECU" So does this mean it's adjustable in the full range IF you have a DP ECU?

[EvilSteve]

I have the full performance ECU in my S4Rs, I had the guys at the shop set it up and it runs like a champ. Not rich or lean, just plenty of awesome.

If I were going to get the bike dynoed then the PC3 is the way to go but as it stands, I don't think the bike needs it.

[He Man]

I learned this the hard way when I got the DP ECU installed. I thought I had a defective ECU or something but it's just how it is designed. With a little fine tuning my dealer was able to minimize the annoying effects at low RPM's a 14t sprocket made a big difference also.

I was just looking at these PCIII's earlier and I noticed this "Note: Power Commander will NOT allow fuel adjustment below 19% throttle and below 5250rpm unless you have the DP ECU" So does this mean it's adjustable in the full range IF you have a DP ECU?

If you have a DP ECU, you can use the non race versions. The race versions will not allow adjustment below 19% throttle at all. this was all because some douche bag decided to sue Dynojet (California) for BULLSHIT reasons.

[DesmonsterS4RS]

If you have a DP ECU, you can use the non race versions. The race versions will not allow adjustment below 19% throttle at all. this was all because some douche bag decided to sue Dynojet (California) for BULLSHIT reasons.

What a bag of douche indeed lol

I guess it's like Hyper said if you wan't full adjustment without a DP ECU just buy the PCIII for an 05 M1000 I.E. you would have to get a custom map but that's always better than the preloaded maps anyhow.

[Uncle Mofo]

I have the full performance ECU in my S4Rs, I had the guys at the shop set it up and it runs like a champ. Not rich or lean, just plenty of awesome.

+1

[hypurone]

I have the full performance ECU in my S4Rs, I had the guys at the shop set it up and it runs like a champ. Not rich or lean, just plenty of awesome.

If I were going to get the bike dynoed then the PC3 is the way to go but as it stands, I don't think the bike needs it.

+1

That's what I though initially. You don't know what you are missing. Take everything you like about the bike/DP ECU and put it on the shelf. Throttle response, engine smoothness, mileage (if you don't choose a crazy A/F ratio)  etc are way better! And the 8hp and 10ft lbs of torque (in my case, YRMV) ain't a bad bonus!

[He Man]

What a bag of douche indeed lol

I guess it's like Hyper said if you wan't full adjustment without a DP ECU just buy the PCIII for an 05 M1000 I.E. you would have to get a custom map but that's always better than the preloaded maps anyhow.

I think your missing the whole point of the DPECU +PCIII piggy. PCIII wont work without the DPECU. Atleast its not gonna be plug and play, and on top of that it wont be that smooth.

[hypurone]

I think your missing the whole point of the DPECU +PCIII piggy. PCIII wont work without the DPECU. Atleast its not gonna be plug and play, and on top of that it wont be that smooth.

A PCIII will work with the stock ECU, BUT, you would have to disconnect  the O2 sensor AND live with a constant check engine light on. If the bike is dyno'd after the PCIII install, it should be smooth as silk though there is the possibilty of the stock ECU going into "limp mode" if it can't see the O2 sensor signal for a repeated number of key cycles. Not sure how advanced these ECU's really are. Remember, the PCIII is "downstream" in the equation and modifies the signals from the bike's ECU before sending to the injectors.

But I agree with your overall sentiment, this is not really the way to go. At least I wouldn't wanna be running around with my check engine light on all the time and not knowing when there really is a problem.

[He Man]

lol, this is getting confusing. This is what ive read. (and why there are no PCIIIs for S2R1000 and why M1000ies PCMs do not work)

PCIII is downstream but it goes like this


ECUMAP -> PCIII->Cylinders -> O2 Sensor says wtf mate, goes back to ECU and says no, something is modifying fuel map. Ignore signals.

when you unplug the O2 sensor it goes like

ECUMAP -> PCIII -ao39482904jsd scrambled. -> stock map.

Thats the whole issue with why DP is the only solution for O2'd bikes and only RB units can work with them.