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Thread: Combine your eprom chip with a PC3 map, then remove your PC3!

  1. #16
    apriliaforum expert vonDutch's Avatar
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    Quote Originally Posted by BrummyMax View Post
    I could PM a beer to you
    Find a way to do that, and it will be uber sticky I think.

  2. #17
    apriliaforum expert kfbmR1's Avatar
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    Quote Originally Posted by Gabro View Post
    max, the use of PCIII maps is not so good... on Aprilia eprom (most of) the fuel trimmer are actives on all the rpm range, you have to know wich position are setup during the PCII mapping
    gab or max now i have gabs chip tweaked and running good what difference will tweaking the trims do?? they are at 12 now. thanks peeps
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  3. #18
    apriliaforum expert Gabro's Avatar
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    your chip has the trimpots actives only up to 4000rpm

    all the other aprilia eproms has 'em active allways:

    blue graph trimpots all lean, red trimpots at midway

    Aprilia bikes ECU tuning and reflashes since 2004!
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  4. #19
    apriliaforum expert BrummyMax's Avatar
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    Quote Originally Posted by kfbmR1 View Post
    gab or max now i have gabs chip tweaked and running good what difference will tweaking the trims do?? they are at 12 now. thanks peeps
    I believe that the 12 o'clock position is 0 adjustment to the fuel maps. Turning clockwise will richen the fuel map values (longer injector open duration). Turning anti-clockwise will lean the fuel map values (shorter injector open duration).

    If yours are at 12'oclock then the eprom values are getting to the injectors unmolested. If your bike is running sweet then job done. If you get it power cammander mapped, you can use the excel spreadsheet I have provided to combine the map with your ecu. Just make sure that the trimmers are at 12'oclock when it gets mapped. This way, once the PC map and the eprom fuel maps are combined, you will avoid compound error of the trim pots.

    Quote Originally Posted by Gabro View Post
    your chip has the trimpots actives only up to 4000rpm

    all the other aprilia eproms has 'em active allways:

    blue graph trimpots all lean, red trimpots at midway

    Hey Gab, why would somebody turn their trimpots full lean? Almost all of the ECU I have seen, both trimmers are 12 o'clock. I bet that bike ran like crap low down. ???

  5. #20
    apriliaforum expert Gabro's Avatar
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    Quote Originally Posted by BrummyMax View Post
    Hey Gab, why would somebody turn their trimpots full lean? Almost all of the ECU I have seen, both trimmers are 12 o'clock. I bet that bike ran like crap low down. ???
    that was my bike (1060 motor), i've just did some experience while on the dyno
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  6. #21
    apriliaforum expert FASTER !'s Avatar
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    Ciao Gab

    Quote Originally Posted by Gabro View Post
    your chip has the trimpots actives only up to 4000rpm

    all the other aprilia eproms has 'em active allways:

    blue graph trimpots all lean, red trimpots at midway

    Hi Gabro ; do all your v2/v5 chips only have trims active to 4000rpm ?

    I am running your v2/v5 in my Factory Tuono with 57 tb's ; open airbox and modified collector with 104/107 cam timing. The trims on my chip seem to affect the entire range. The chip was a little rich on the bottom but I managed to make it smoother by tuning the TPS and trims out and she seems to run good !!! Take a look at the dyno ; the yellow is final tune.

    What do you think ; it is possible to improve ???
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    Last edited by FASTER !; 08-23-2010 at 04:09 AM. Reason: spelling
    SPEED IS RELATIVE OFFICER

  7. #22
    apriliaforum expert BrummyMax's Avatar
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    Quote Originally Posted by Gabro View Post
    that was my bike (1060 motor), i've just did some experience while on the dyno
    I would experiment with a dyno if I had one too.

    Dynos - the ultimate toy!

  8. #23
    apriliaforum Member piker's Avatar
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    This stuff is sooooo over my head. I must be a dinasaur!

  9. #24
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    in the TunerPRO XDIF-file, is cyl #1 front or rear?

  10. #25
    apriliaforum expert BrummyMax's Avatar
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    I cant remember. Have a look on random exploits. The answer is probably there. Report back your findings ....

  11. #26
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    Quote Originally Posted by BrummyMax View Post
    I cant remember. Have a look on random exploits. The answer is probably there. Report back your findings ....
    I have tried to sort the fueling of the bike for a couple of days now, and it seems like #1 is the front cylinder. What I can't get a grip of is what the numbers in the fuel map really mean, changing the high-load cells is quite intuitive and gives a direct impact on the exhaust AFR values, but the close to idle-cells dont seem to respond very well.

    I have assumed the cells being units of on-time, is this assumption correct or is any other parameter also involved?

  12. #27
    apriliaforum expert BrummyMax's Avatar
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    You would expect the rear cylinder to be cylinder #1 and consequently, the first addressed fuel map in the eprom should be cylinder#1.

    I believe these to be accurate. Fuel table values are divided by 40 to find millisecons of squirt. Ignition table values are divided by 3 then 24 subtracted to find degrees before top dead centre.
    The lower values are affected by the trimpots more than the high values because they are a fuelling offset, not percentage. Also, some codebases have the trimpots only active upto 4000rpm. This would mean adjusting the smaller fuel table values will only be intuitive when the trimpots are at 12 o'clock position.
    I have creayed a new spreadsheet. It combines Motty AFR maps with eprom fuel tables. I can email you a copy if you want, but before it goes public, I really need to build total confidence in it.

  13. #28
    apriliaforum expert Gabro's Avatar
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    std RP58 software code enables the CO trimpots in all RPM.

    Aprilia bikes ECU tuning and reflashes since 2004!
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  14. #29
    apriliaforum expert Gabro's Avatar
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    Max, the binary i've sent you has the pots enabled only up to 4000rpm ;-)

    btw: have you tested it?
    Aprilia bikes ECU tuning and reflashes since 2004!
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  15. #30
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    Quote Originally Posted by BrummyMax View Post
    You would expect the rear cylinder to be cylinder #1 and consequently, the first addressed fuel map in the eprom should be cylinder#1.

    I believe these to be accurate. Fuel table values are divided by 40 to find millisecons of squirt. Ignition table values are divided by 3 then 24 subtracted to find degrees before top dead centre.
    The lower values are affected by the trimpots more than the high values because they are a fuelling offset, not percentage. Also, some codebases have the trimpots only active upto 4000rpm. This would mean adjusting the smaller fuel table values will only be intuitive when the trimpots are at 12 o'clock position.
    I have creayed a new spreadsheet. It combines Motty AFR maps with eprom fuel tables. I can email you a copy if you want, but before it goes public, I really need to build total confidence in it.
    I would like a copy of the spreadsheet if you have it sort of working. I am however still at the point where I try to avoid false oxygen due to not igniting at all for lots of cells.

    Are you sure about #1 in the XDIF-file being the rear? I have logging for both cylinders, and I can see a direct correspondence between more fuel and richer burning for the front cylinder..

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