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8 and 10 hole injector on 170 4V

This is a discussion on 8 and 10 hole injector on 170 4V within the Grom Performance forums, part of the Honda Grom Garage category; Don't think it flows anymore than the 6 hole injector. I can tell already it idles lean even with air screw all the way closed. ...

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Thread: 8 and 10 hole injector on 170 4V

  1. #71
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    humilde_s13's Avatar
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    Don't think it flows anymore than the 6 hole injector. I can tell already it idles lean even with air screw all the way closed.


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    Takegawa 181cc
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    m in sc's Avatar
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    sounds like the ecm is the issue here more than anything, or at least the setting on it.
    A bunch of old stuff that runs. 2stroke grom build...in process.. eventually...

  3. #73
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    I'm done buying injectors. Buying the bazzaz to fine tune the finbro ecm.


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    Takegawa 181cc
    Finbro head
    Koso 34mm
    Yoshimura cam
    Aracer rc mini plus 2

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    if you are running the 181 cc, you NEED the 10 hole (forza / cb1100) injector for sure.

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    use stock ecm, sell the finbro one and get a powercommander w wb2.
    A bunch of old stuff that runs. 2stroke grom build...in process.. eventually...

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    I run a Finbro ECU (no stock o2 sensor) now along with my Dobeck AFR+ and a 10-hole forza injector on a 181 "max effort" 2 valve setup. The cold start enrichment always fought with the AFR+ with the stock ecu. I've been told the finbro ecu timing is 3 degrees less than stock across the board. Also, I now have a 12k rev limit. Looking forward to building a 4v motor soon and I plan to just bolt this setup up and it should work well there too.
    humilde_s13 likes this.

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