Has anyone tried activating the accelerator pump feature on their PCIII and if so, what was the outcome? I understand the concept, it adds extra fuel anytime you open the throttle from a steady state position to a larger opening. In theory, any tendency to go lean momentarily from rapid opening of the throttle would be "fixed" with a quick shot of fuel. What I want to know is, does it actually work and can you notice the difference in throttle response? I may do this to the CBR this weekend, don't think the 14 needs it, it's already very smooth.

Kruz

* Last updated by: Kruz on 8/28/2009 @ 9:52 AM *

I've heard pros and cons about it.I set mine as recommended in the CD software.Honestly,I've no idea if it's ACTUALLY doing anything.I think "maybe" it's more for carbed systems than fuel injection-guess you could call or e-mail Dynojet and ask.(perhaps I will)-yes,I think I will.May also be a waste of fuel?Don't know.

* Last updated by: blue07 on 8/28/2009 @ 12:29 PM *

That's what I thought blue. I was going to try it but it sounds like a gimmick to me and nobody has reported "oh wow is this ever great" yet. Have you tried messing with the settings? These are recomended off the PowerCommander USB website:

Racing
75% Sensitivity
20% Fuel Increase
15 Engine Revolutions

Street
90% Sensitivity
15% Fuel Increase
20 Engine Revolutions

Kruz

but isnt the pc3 for fuel injection only? as far as i know these are not made for carb cycles

Correct, the PCIII works only on fuel injection.

Kruz

I was going to try it but it sounds like a gimmick to me and nobody has reported "oh wow is this ever great"

That chopper as far as I am concerned, is on it's way back for a better wheel true I did not do. This shakedown run now has to be all torn down for paint. I have an open window to swap the other subless/shaftless/no-code actuator. I am all set to rerun the '06 throttle bodies. I am working on the bike as we speak.

So, I'll be shaking down another raw data RUN on a clear dash this time. If I set that Tfi just on the accelerator mode, I can tell right off, we hacked into more the digital, or messed with the fuel maps on the steady flow... Get it? Elixir rings a watt of chime? Why are you buzzing now kind of turn that accel off to tell where we are at in the ignition curve to fueling with the ping sort of gather that data too to say it did not move you throwing fuel at it.

That accel is buzzing the fuel trim in the constant is watt I remember. Why set the other 3 up if I am spitting too much fuel with that elixir set in one mode? That is the only reason I am going to try to determine if completely setting the pots closed, will be out of the loop so I can fine tune some other pot luck anyone?

If you understood down to here; watt I am saying is the buzz was on with all pot shut off but the accel. Because now, I did mess with the low pot setting and it practically shut down the bike being it was fuel stumbling. Don't get me wrong on the Tfi being some sort of elixir that way. Stay tuned; we matching accelerator settings.

Set mine for the "street"application.So.................don't know about any other setting(yet).But may give that race setting a go sometime?

I've heard pros and cons about it.I set mine as recommended in the CD software.Honestly,I've no idea if it's ACTUALLY doing anything.I think "maybe" it's more for carbed systems than fuel injection-guess you could call or e-mail Dynojet and ask.(perhaps I will)-yes,I think I will.May also be a waste of fuel?Don't know

you should stay away from any doing any setting with the comments like for CARB MODELS

Ya-I know it's FUEL INJECTED.Just comparing this feature with the old carburetors that had the fuel accelerator(pump) on them(HOLLY 4 barrels specifically).Didn't word it correctly-what I meant to say about the pump feature.

* Last updated by: blue07 on 8/29/2009 @ 8:27 PM *

Weloop, I just came back from a run tonight. Between holding on and not knowing when the rough stuff was going to come, it was too dark to see the ripples on the road. I backed off about 150ish over them, knowing I was about to enter that area.

Man, I can't tell with such a short blip. Tomorrow, I'll make my run on some back canyon road, pull over, see if the unit will stumble like last time. As far as the accel, I had that pumped up pretty high, but felt nothing. The rate I was moving, I was more for a masturbatory high speed run tonight and shook the throttle body swap down.

Goo-goo-gaa-gaa, I think I found more, 'sick smooth' with the code-less dash and the whole subthrottle system removed. Darn sure feels a lot smoother. So, riding a new loop tomorrow, I'll try and see if I can tell with or without the fuel cutter in play what is up with the accel option. Lots of short squirts from corner to corner, plus long sweepers. I've seen a group sport bikes file down this one road, but I'll take a quieter route.

When I swapped the bodies, looked at the holes in that ram, the stacks, the pulse of the body when it runs; I wonder if they had that factored in as everything covered as per design. That bike/frame is impressive.

So sick is slick is it smooth! You know I sync'dit.

Ya-I know it's FUEL INJECTED.Just comparing this feature with the old carburetors that had the fuel accelerator(pump) on them(HOLLY 4 barrels specifically).Didn't word it correctly-what I meant to say about the pump feature.

That's what I figured you meant blue. Yea, they really worked great on the old analog stuff (carburetors) but the delay time between throttle opening and fuel response due to the inherent inertia in that system was measured in seconds, the pump feature made a huge difference there. The New digital fuel injection is so quick to respond, we're talking a few miliseconds here, I can't see much advantage using the pump feature but I could be wrong.

Kruz

* Last updated by: Kruz on 8/31/2009 @ 8:21 AM *

So, riding a new loop tomorrow, I'll try and see if I can tell with or without the fuel cutter in play what is up with the accel option.

Hub it sounds like you're once again busy hacking that code in the abstract! Let us know what you final settings are on the accelerator pump option and if it's worth messing with. I would be tempted to start with extereme settings and then move them gradually back towards zero until you find something that works. There will undoubtedly be some overlap effect between the three variables. I wouldn't know where to begin except with DJ's recommendations. I have gotten one response on this off the CBR site and he used settings way mucho different from what DJ is saying.

http://www.fireblades.org/forums/general-discussion/78478-power-commander-accelerator-pump-feature.html#post848923

Kruz

* Last updated by: Kruz on 8/31/2009 @ 8:51 AM *

Heat wave my abstract was a no-show yesterday. I am going back and forth if I should dress light an not sweat so much, or risk not being well suited like normal these days and just wait it out. I have a window now, but traffic is too heavy in the cool morning.

I have to pull over to many times to dial the pots either way. And yes, Kruz, I'm [about] full twist on the pots so I stumble to a stop to correct the fuel trim. Today might be the day the heat wave moves on. 'Hot August Nights' are for the slow crowd with t-shirts and flip-flops for riding gear.

I had sweats, a jean jacket, shoes, [no socks] that would fling right off and here I am over the shitty infrastructure around here; would about send me flying on that shakedown the other night. So, risk after risk is more I suit up for this one and weight it out with the heavier protection so I can romp at will.

* Last updated by: Hub on 8/31/2009 @ 9:02 AM *

Hub, I tell you what would be fun, go into the cells and hack the abstract, add + fuel everywhere and see how it runs. You can richen until it's blowing fuel mist out the tail pipe. You can always go back to your baseline map and change only those cells where it helped...leave the rest alone. You can't hurt anything adding fuel, except maybe foul a plug. After a while your "butt dyno" and ear would be 'tuned' to rich. This is the basis of 'street tune' versus dyno tune....it takes experience to get smooooooth! Dyno tuning is great if all you do is ride a dyno, I think street tune is + fuel from optimal dyno tune.

Kruz

* Last updated by: Kruz on 8/31/2009 @ 10:10 AM *

Yeah Kruz, if I had a PC or any programmable fuel cutter, I'd lean it out at a certain rpm then once I leave that area???? I'd have the best of both worlds with one map.

But then again, I'd be on the (-) cuts for the K-ruzzzzzzzzzzzzzzing it better be super crisp on the cutting edge.

Then, if I were to be buzzed on that setting, I could swap to the smoother mover map made. But see, with that Tfi, I am more sitting on a one way (+) layer over the stock setting. It is, 'either/or' and that more or less you set it on the fly and live with two basic run settings. The one being stock. The other being toggled on snooze mode is it smoother; the buzz is gone...

Watt a glider I am sitting on now! I'm itching to find out.

* Last updated by: Hub on 8/31/2009 @ 10:40 AM *

Just got an e-mail from a tech at Dynojet.HE SAID-they ran two sets of bikes at a certain raceway.One set had the accell pump enabled and set.The other bikes did not.However many sets of riders they had-half couldn't notice ANY difference from the pumped bikes to the unenabled ones.HE SAID-try it with or without the feature enabled-and see if your "butt dyno" feels anything different.It's for a quick shot of fuel on rapid throttle applications.I'm not changing it any time soon-I've got it set for the "street"setting.Guess it's doing something-but probably very minimal since the flies are out,and the PCIII is set for my application.16/42 gearing gives it a boost anyway.

Since reinstalling the sub-less throttle body, I wired the bike up this time where I have the ability to 'plug'&play' any fuel cutter going off the injectors.

If I could get off my rump and ebay some worldly goods, I'd bung up another fuel cutter. For right now, I'm chasing that accel mode and low cut for the squat out of the corners. See if I can tell on the short shoots.

Hubster, I wish I could locate a real time data logger like we use on our aircraft engines. All I would need is 3 channels, rpm, A/F ratio and throttle position, something that would plug into the PC harness. I would then be able to go back in, dial in the presets and smooth out the map under actual riding conditions, find out what she's really doing.

Kruz

I think street tune is + fuel from optimal dyno tune.

I may be off base on that statement, I compared FuelMotos map to the standard DJ map for my CBR and it's - fuel in almost every cell. Not a lot but consistently 3-7% just about everywhere. It will be interesting to see what the butt dyno sez when I get it out on the road. I'm looking for smooooooth power flow with a big topend hit thrown in. I think DJs map was waaaaay too fluffy (rich). We'll see, standby.

Kruz