Highfive - WRR Athena Big Bore Project

Discussion in 'Thumpers' started by HighFive, Sep 18, 2010.

  1. Crawdaddy

    Crawdaddy Navigate 2 Adventure

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    Thanks for the reply/explanation.......posted this on the WRR Mega Thread this morning in regards to the FMF unit:

    Just off the phone with Dobeck.....my contact is a tech named Chris - phone # is 877 764 3337

    I was told to use 5, 8, 8, .5, 3, 4 while on my trip too Utah this week.....not the optimum settings because the unit is pushing +15% at the #2 spot (acceleration) instead of +18%.....same with the 3rd position (WOT).....

    In a nutshell, crank up the second and third settings to the max until they get the unit back to update the firmware (settings 1 (cruise), 4 (RPM range to activate cruise), 5 (timing for acceleration adjustment) & 6 (timing for WOT adjustment) remain unchanged from the new firmware guidelines noted above)......once they squirt in the new firmware I'll revert to the 5, 4, 4, .5, 3, 4 settings noted above......
  2. HighFive

    HighFive Never Tap-Out

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    Well.....good luck with it, Crawdaddy. You'd still have to put the bike on a Dyno to know for certain what your AFR is doing. I simply can't say whether the FMF unit is adequate with the 290 bore. I never tested that combination, as I ordered the Power Commander parts together with my Athena kit.

    Myself, I'd probably lose sleep over it. I hate speculating over issues that can be measured precisely. If you study my dyno runs (charts posted at WRRdualsport.com) you can observe the AFR when the 250cc bore was running with the FMF unit. It was running a bit lean in the lower rpm range.....from idle to about 3,000 (if I recall correctly). Thus, the dreaded snatchy take-off. So, that would be a particular area of concern for me.....switching to the 290 bore, as the FMF provides no adjustments for that part of the curve. Zippo!

    Go find a Dyno. :deal

    HF :thumbup
  3. Duken4evr

    Duken4evr Been here awhile

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    Just read through all of this - very cool project HF! :clap

    I have an '06 FZ1, we have been playing with the PCIII and PCV on that bike for 6 years now on the FZ1 board. The maps that work on that bike all have a similar pattern - pretty significant fuel add at 2% through 20%. Stock EPA mapping is real lean here, and the throttle response is soggy. Richening it up in that zone does hurt gas mileage (perhaps an 8% reduction), but the bike runs so much sharper. The thottle feels way more connected to the rear tire vs. the numb stock response. Top end mapping it large throttle openings is pretty close. We lean it out just a tad on the FZ1, even with a full exhaust and no CAT. Obviously the top end mapping was way rich on a stock bike.

    A whole 'nuther adjoostment to play with is the "accelerator pump" fuction, which give the engine an extra squirt of fuel for a set number of crank revolutions. Commonly guys run a 15% bump for 30 revolutions with medium sensitivity. This may help the engine respond when "grabbing a handful". I don't bother with it on the street bike as it is hellaciously sharp and fast as is, but it may be something worth tinkering with. I gather you like to tinker...

    Attached is a screenshot of the map I run in my FZ1. Curious how it compares to your setup.


    [​IMG]

    I know the WRR is a different bike than the FZ1, but the map in the ECU is tuned for EPA compliance at part throttle and cruise, and they all come "safely fat" on the top end. I have an ignition module too - don't know if your PCV does that. If it does, I will post up the ignition table. Adding advance at light throttle really frees up the throttle response and gets back some of the lost fuel economy from richening up the part throttle. The advance for larger throttle openings is close. This is all per dyno testing by a few different tuners. We have a map database on the FZ1 forum, I happen to be the "map maven". :evil

    The HP gains from remapping and a a CAT free full exhaust are actually pretty significant on the FZ1 - around 18 hp in the midrange. All else being equal, divide by 4 still makes for a 4 to 5 hp midrange bump on a stock WRR, more with your big bore kit. A wide open dyno run only tells a slice of the story. Peak power may rise some, but the midrange power and throttle response increase is no doubt pretty substantial with your mods. The real story, (filled with wheelies, growling up gnarly hills and shooting roost) for a dirt bike, is in midrange and part throttle response.

    Nice work!
  4. Sewerat

    Sewerat Cert. bike whore

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    Checking in for future reference.
  5. f3joel

    f3joel n00b

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    Thanks for this thread.
    And thanks to MotoMind for the cam chain tensioner method.

    This is how she should have come stock.
  6. HighFive

    HighFive Never Tap-Out

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    Good deal.....:thumb

    HF
  7. HighFive

    HighFive Never Tap-Out

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    It was a fun project.

    HF
  8. Bitingdog

    Bitingdog That's not my dog

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    HF, when did you get rid of your Whizzer? Still loving the 70° Huey?

    Cheers, Adam
  9. HighFive

    HighFive Never Tap-Out

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    Couple years ago......still sad about it. But I grieve perpetually over every bike that departs. Well, except that pathetic Carabella MX'r my Dad forced me to race on for a while, way back when. Never so happy to be rid of a bike in my life since. But, I digress...

    YES, I still love my Husaberg FE390. It's my all time most favorite bike in the whole world.....still. Five years running and still king of the HighFive stable. Its run flawless since Day 1. Never needed a valve adjustment. Super smooth running and easy to maintain. They tell me parts are available, but I've never needed any yet. Doubt I'll ever own a better bike.....or ride one, for that matter. What was KTM thinking when they killed it?

    HF :deal
    Cruz likes this.
  10. Cruz

    Cruz Lost but laughing.

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    Have to agree with you HighFive, still have my 09 390 with nil work done to it other than a clutch bleed.

    I was after a WRR but it was just too clunky suspension and high revving and then found the FE390. A great handling lighter type of WRR!
  11. jagg

    jagg n00b

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  12. DMWI

    DMWI Circus Bear

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    High Five, Thanks for the great write up here and at your site. Been "researching" for some time. Just picked up a 2014 with 3k miles, FMF pipe and programmer. Learning as much as I can from all sources. You and Big Dog have been very helpful on mods and accessories. Thanks!
  13. HighFive

    HighFive Never Tap-Out

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    You are most Welcome, DMWI. Glad its been useful to you.

    HF :thumbup