Dynojet PC-5, with Autotune, and full exh. system Tune...

Discussion in 'Parallel Universe' started by ebrabaek, Feb 8, 2013.

  1. Gaspare

    Gaspare Almost dirt rider

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    About the headers: I do confirm.
    Actually they're suitable mainly to re-shape the torque delivery... with QD headers (because of the joint closer to exhaust valves) I gained a lot at low and midrange, but I've lost about 10 km/h on top speed (therefore less peak power).
    #81
  2. mousitsas

    mousitsas Long timer

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    However, unless you make sure you have identical AFR for both, you can never tell what exactly the differences are...
    For example it is very likely you lost 10km/hr because you are running too lean at WOT.
    #82
  3. ebrabaek

    ebrabaek Long timer

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    We think the reason for the headers are minimal is the inability of the stock ecu to correct any more fuel, as when we did the " third run" it was without the PC-5/AT. One important factor to consider. There have been no loss, of torque, or HP, anywhere. Many states they loose " low end torque"... etc. It is now just that it rips better at higher rpm, thus the low end more transparent. As indicated there was no loss of hp/tq. ....anywhere. I have not ridden it a lot, and is trailering back south starting today, but the few things that stood out was the perfect low rpm handling..... very smooth powerband overall, with minimal dead spots.........phenomenal throttle response. Regarding the intake..... I agree, but will have to admit that we forgot. We did the last dyno run with out the plastics, so we could lift the lid...... but forgot...and then it was the end of the day. The good thing is now with the pc-5/at in place, it is just a matter of lifting the lid on any dyno. I will see if I can find one down here in El Paso,TX.......I would like to add the following. There was a thread somewhere on advr, asking what is their single best mod on the bike. The pc-5/at winns in my corner.....hands down....and I have plenty of $hitooldes on it. But the now corrected fueling, will make it sooooo much easier in the tecno sections, where I always got sore in my torso from wrestling her up and over. With the addition of the Recluse auto clutch next week, I feel there is a winner, with just the suspension to go.:clap:clap
    #83
  4. ebrabaek

    ebrabaek Long timer

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    Agreed. We saw crazy lean indications with headers, and open muffler, way beyond max fuel economy. I was glad I did not do headers before the pc-5/at combo. Mind you, we only published one graph for each condition, but did about 4-5 run's. Dangerously lean. The only way to judge the results un biased.... is with the pc-5/at active.
    #84
  5. ebrabaek

    ebrabaek Long timer

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    Uhhhmmmmm... one more note...... We tried to get a good pickup on the rpm, but it was not triggering good, so speed in stead. But the runs was initiated at 2000 rpm, and straight to the limiter..... Hitting it every time. It was hard to watch, as I have never hit it before....:D:D but wait until the runs publish...... Quite the thing..... She was flogged.....:lol3:lol3
    #85
  6. ebrabaek

    ebrabaek Long timer

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    Another note..... we used the switched power outlet to power the pc-5. Unfortunately it placed just enough drain on that circuit so the canbus leaves it active, thinking there is a charger on it, thus draining the battery. Anyone with a electrical diagram that will share a key switched wire with me....?????
    #86
  7. toniguedes

    toniguedes Adventurer

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    Hi,

    I believe that installing a relay, connected to the switched outlet, will fix that problem, as it will be triggered by only a few mA. Don't forget also to install a fuse!
    #87
  8. mousitsas

    mousitsas Long timer

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    Why do you need a dyno? With autotune, the road is your dyno and a better one as such!
    #88
  9. battlecattle

    battlecattle Been here awhile

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    Go with the delayed (60sec) switched source above the battery. There is a BMW connector and I use it as a switched source for my fuse block.
    #89
  10. Gaspare

    Gaspare Almost dirt rider

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    Hi, friends... here you are the wiring diagram of our parallel:

    [​IMG]

    Then, about the lean condition: I've carried out a mod onto IAT (quite similar to booster plug) able to enrich evenly 7% along the whole of the rpm range.
    After this, the ECU leaned down again to AFR target thru λ sensor... So, don't think the bike (with OEM muffler & QD headers) is actually crazy lean.
    It's simply on the BMW targeted AFR, that's - you're right - anyway clearly below the optimum.
    The way is to change this target and design a new baseline, remapping.
    Work in progress... :evil
    #90
  11. gbtw

    gbtw Been here awhile

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    My google chrome redflags that website so if you could upload it on something safer i would appreciate it.

    Erling, thank you for doing this, looks like it is exactly what i am looking for! hope to do it soon :) :freaky
    #91
  12. battlecattle

    battlecattle Been here awhile

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    http://i.imgur.com/NZprxEk.jpg
    #92
  13. ebrabaek

    ebrabaek Long timer

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    That should work.... I just wondered if there was a direct wire, so I do not have to throw yet another relay in there.... getting pretty tight..... Although there are room under the dashboard.
    #93
  14. ebrabaek

    ebrabaek Long timer

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    Dont believe the base map loads. It is not as simple as just input the parameters, and go ride..... unless you then ride...go back and adjust.....ride again....adjust....etc. We took the base map, and he changed parameters to suit his knowledge, and to back up what the dyno told him. We did 5 runs with the whole system, and it was perfect.... no need to tweak anything. As the guys that has done them dynoless..... From all the post I have seen by people doing this.... There have been a learning curve....and tail chasing....:D
    #94
  15. ebrabaek

    ebrabaek Long timer

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    You meen the bmw plug... if yes... That is what we did.... or you mean the other plug in there... We thing the draw is to big to just trigger the canbus batt. charger sensor.
    #95
  16. ebrabaek

    ebrabaek Long timer

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    Thank you sir...... Great to have the electrical..... I am looking forward to see your end result. The a/f ratios depicted on the dyno graphs do not tell the whole story. When just driving around on the dyno with live reads..... with headers, and pipe....we were astonished to see up towards 20 a/f..... way too lean
    #96
  17. ebrabaek

    ebrabaek Long timer

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    Absolutely. If you have the pc-5/at, you can buy the the same map I have, from Eddie at SSW. It will save you a lot of riff raffing...:D:D, or he can sell you the package already loaded. Just a thought....:clap
    #97
  18. ebrabaek

    ebrabaek Long timer

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    A few extras. The first three runs ..... ( stock....Muffler......then headers, and muffler)..... dont tell the whole story. Those were done at WOT, and the stock map does use the o2 sensor there, but as we puddled around on the dyno, at 1/4 to 1/2 throttle... we saw way high a/f ratioes approaching 20, which is way to lean. As the stock map only "widebands" from closed to 1/8 throttle, and wot..... everything between is from the preloaded map, which is lean to start with....and leaner with pipe.....and waaaay leaner with headers, and pipe. Personally I would not run headers,and open pipe with stock map.....simply to dangerously lean...imho. You cannot hear, or see this, but the dyno reveals this.... To much horror.
    #98
  19. mousitsas

    mousitsas Long timer

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    Indeed, you have to go back a few times accepting the trims, so it might take some riding (and usb fiddling), but the end result shouldn't be different than what a good brake dyno will provide, plus it is free. In fact the result will be even better as no dyno can simulate the road, or the way you ride.
    I will soon do exactly the same to a friends 990, so I will know first hand.
    #99
  20. ebrabaek

    ebrabaek Long timer

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    Granted the dyno graphs were printed at wot, as that is for power......But... we fiddled around " driving on the dyno" and were able to see live numbers as when you ride, so I will agree that you can achieve same results over a period of time.... But...as a one stop setup....I'l take the dyno....any time. The real secret is the tuner's infinite knowledge of the PC-5 programming. That is where the real value shows. Before we started, Eddie asked what my concerns were, as he had not worked the 800 before, but were familiar with the bigger GS, and have done a few of those. He then proceeded to load the base map, and after a few runs, and map tweaking, it was done. If you are a knowledgeable guy like yourself, then most likely you can achieve same results over time. But many are not. This is the first time I have a bike with the pc-5/at circuit, although I have seen it in action many times, I am smart enough to not dick with something until I know what I'm doing..... specially if it can destroy the motor.....:D:D. The whole idea, and money for that matter, was to draw attention to how lean this thing run, and only way to do this.....is on the dyno. I am however confident you will achieve what you are looking for.:freaky