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Differences between the new Yuminashi ECU and Finbro’s ECU ?

This is a discussion on Differences between the new Yuminashi ECU and Finbro’s ECU ? within the Grom Performance forums, part of the Honda Grom Garage category; good info. i havent played with mine that much, but that all makes sense....

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Thread: Differences between the new Yuminashi ECU and Finbro’s ECU ?

  1. #11
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    good info. i havent played with mine that much, but that all makes sense.
    A bunch of old stuff that runs. 2stroke grom build...in process.. eventually...

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    I had been running the modified stock exhaust with the Yuminashi ECU just to record some gas mileage (140.0 mpg), so today it's back to the loud exhaust.

    -pwexqvx.jpg

    Wow... the bike is much more responsive and freer revving with the Yuminashi and the TOCE than it was with the stock ECU.
    2018 GROM:
    TST Rear Fender Eliminator
    TST Taillight +Signal Lights
    TST Front Signal Lights
    Dinger Built Extra Long Intake
    IXIL Dual Exhaust
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    Honda Monkey Rear Sets
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    sorry tooter. i guess you're just full of hot air again.

    [img]yuminashi by William Glancy, on Flickr[/img]
    jtxr and Paultergeist like this.

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    ..probably explains why it worked well with the pcv on my bike, the target afrs are already so close to the wb2 target of 13 (at least in the closed loop) it doesn't have to adjust much at all. i really need to spend more time on it.
    A bunch of old stuff that runs. 2stroke grom build...in process.. eventually...

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    Quote Originally Posted by m in sc View Post
    ..probably explains why it worked well with the pcv on my bike, the target afrs are already so close to the wb2 target of 13 (at least in the closed loop) it doesn't have to adjust much at all. i really need to spend more time on it.
    lol, yeah you do, as I'm waiting for your results to determine if I'm going to add it to my PCV setup. Hell just getting rid of the stock rev limiter seems to be worth it so there's no fighting with the PCV rev limiter.
    2017 Grom
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    the yuminashi is tuning to stoich in closed loop. not 13.2:1

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    Quote Originally Posted by Wibbly View Post
    sorry tooter. i guess you're just full of hot air again.
    The Quibbler is back at it again. Name:  hNtEB6l.gif
Views: 104
Size:  903 Bytes

    I simply described how the engine performs better in the high rpm range than with the stock ECU because that's my real world experience. The crisper throttle response is due to a different ignition timing. I had the same thing happen on my DRZ when I replaced the stock ECU with a Dynatek ECU. It also has a different ignition timing curve.

    Do you do any actual riding? Or do you just theorize?
    2018 GROM:
    TST Rear Fender Eliminator
    TST Taillight +Signal Lights
    TST Front Signal Lights
    Dinger Built Extra Long Intake
    IXIL Dual Exhaust
    Yuminashi ECU
    Kitaco Case Cover w/Oil Filter
    Takagawa High Volume Oil Pump
    Honda Monkey Rear Sets
    Honda Monkey Front Fender
    Honda Monkey Fork Guards
    Honda Black Plastics
    G Craft Rear Rack
    Cargo Crate

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    it's only a few weeks since the snow melted here you jackass. what do you think!?


    anecdotes aren't useful.
    Last edited by Wibbly; 04-04-2019 at 10:31 AM.

  10. #19
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    Quote Originally Posted by tooter View Post
    The Quibbler is back at it again. Name:  hNtEB6l.gif
Views: 104
Size:  903 Bytes

    I simply described how the engine performs better in the high rpm range than with the stock ECU because that's my real world experience. The crisper throttle response is due to a different ignition timing. I had the same thing happen on my DRZ when I replaced the stock ECU with a Dynatek ECU. It also has a different ignition timing curve.

    Do you do any actual riding? Or do you just theorize?
    I would not sweat my balls over the internet gurus who are well versed in any topic, I had the same problem when I was DIY testing my groms back in 2014-15 time frame trying to make it run faster or better. I always had members who are smarter than me tell me I was wrong or doing something wrong or posting facts and such. Yes some of the data they spooled were true, but in the real world testing you have variables that could and will change your final out come.

    For me I just ride, DIY testing, change things and see what works and what doesn't and yes sometimes things break, blowup, but the learning curve is always changing.

    Just ride it like you stole it and have fun and piss off the cagers and other MC that think you are riding a toy.

    Ride safe
    tooter likes this.

  11. #20
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    Quote Originally Posted by Wibbly View Post
    it's only a few weeks since the snow melted here you jackass. what do you think!?
    No wonder you're always so pissed off. Your weather fits your ugly mood.
    California has great biking weather so I get to ride all year round. That's why I'm happy.

    -etjykkj.jpg



    anecdotes aren't useful.
    I go by my own real world experiences.
    Attached Thumbnails Attached Thumbnails -etjykkj.jpg  
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    Last edited by tooter; 04-04-2019 at 10:49 AM.
    2018 GROM:
    TST Rear Fender Eliminator
    TST Taillight +Signal Lights
    TST Front Signal Lights
    Dinger Built Extra Long Intake
    IXIL Dual Exhaust
    Yuminashi ECU
    Kitaco Case Cover w/Oil Filter
    Takagawa High Volume Oil Pump
    Honda Monkey Rear Sets
    Honda Monkey Front Fender
    Honda Monkey Fork Guards
    Honda Black Plastics
    G Craft Rear Rack
    Cargo Crate

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