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Featured Hondata Flex Fuel upgrade - 265 hp and 285 lb-ft on a stock Si

Discussion in 'Engine / Exhaust / Transmission / Tuning' started by Hondata, Nov 10, 2017.




  1. Hondata

    Hondata Hondata Elite Sponsor

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    Available Monday Hondata will release the Civic FlexFuel upgrade for the Civic Si.

    Using inexpensive ethanol sensors and high ethanol content fuel it is now possible to make significant performance improvements with the supplied calibrations. Not only will your Civic make more torque and power, but it will spool the turbo earlier and faster while operating considerably cooler and smoother.

    Unlike manufacturer flex fuel systems, the Hondata Flex Fuel upgrade dynamically adjusts the tuning for peak performance dependent on the ethanol content of the fuel. Just plug in, fill up and go. Gains of 64 hp and 64 lb ft torque over stock are possible for a total of 265 hp and 285 lb-ft torque.

    No tuning required. Just plug in, fill up and go.



    17_civic_si_stock_with_flex_fuel.gif

    Here's a quick how to:

    https://www.hondata.com/downloads/flex_fuel_upgrade_instructions.pdf

    stock_fuel_line_cut_points.jpeg

    fuel_line_with_ethanol_sensor.jpeg

    flex_fuel_under_hood.jpeg
     
    Last edited: Nov 12, 2017
    Brian17Si, dawsonj87, Ghostype_R and 6 others thanked this.
  2. 360glitch

    360glitch Moderator Moderator

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    Very nice, I love the guide to “build your own” setup. Very economical compared to other options.
     
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  3. dc2turbo Senior Member

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    Very economical.
    Can be done for $250 with dorman fittings or $325-350 with AN lines. This is all retail price and not wholesale
     
    Last edited: Nov 11, 2017
  4. FKSE7EN

    FKSE7EN Senior Member

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    @Hondata would this work on all 1.5 civics or is this only for the Si? I’m assuming if it was to work on the non Si models the hp/tq would be less.
     
  5. dc2turbo Senior Member

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    It will work with all 1.5t but Si will get the update first.

    I recommend a 1ft russell fuel line and a 2ft Russell fuel line
    20171110_224332.jpg
     
    Last edited: Nov 10, 2017
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  6. OP
    Hondata

    Hondata Hondata Elite Sponsor

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    For the base Civics the peak torque should be similar but peak power will probably be down a little. The following software update will cover the other Civics. For those with an upgraded clutch, there's probably even more power and torque to be found.
     
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  7. Green82 Member

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    where can you find a upgraded clutch? i have looked around and have yet to find one because i would love to tune and do mods on my car but been holding off till i found a stronger clutch
     
  8. dc2turbo Senior Member

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    http://prlmotorsports.com/clutches-32.aspx
     
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  9. OP
    Hondata

    Hondata Hondata Elite Sponsor

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    Do you have a MT? If so install a flex fuel kit, drop me a PM, come visit our dyno and I will do a couple of runs for you.
     
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  10. FKSE7EN

    FKSE7EN Senior Member

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    I do have a MT. Thanks Doug.
     
  11. Sklizo Member

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    The real question is will this mess with our Honda warranty chances? I know there is a dealership that covers Hondata reflashes, hopefully this will be covered, too!
     
  12. 17siturb0 Senior Member

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    Well as it says, no tuning required. However you are modifying the fuel line. You could buy two, so you can keep the stock one to switch back to when you go to the stealer.
     
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  13. dc2turbo Senior Member

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    Warranty does not get void unless the part you added was the cause of damage

    Here's my setup with AN lines. Idea is to use a 6" fuel line on the firewall but the smallest Russell sell is 1'. You can also make your own line too by buying 3 or so feet of teflon -6an line and 4 -6an fittings.
    I have it temporary mounted there. I plan on tucking it somewhere. Where it's not as visible

    I went with the zeitronix ECA-2 kit. The kit and AN fuel line costed me under $400 on Amazon. I believe the Innovate kit is around $250. Dorman fittings is $10 or AN for $100 or less
    20171111_115610.jpg
     
    Last edited: Nov 12, 2017
  14. Sklizo Member

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    I understand that, but this is a signifiant increase in power with an engine that isn't 100% tested yet. Messing with something like the fuel system would be really easy for Honda to say nope to your warranty.
     
  15. dc2turbo Senior Member

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    If you are worried then put the stock line back on. You can get a new one for $25 or run AN lines and keep your stock line
     
    Last edited: Nov 11, 2017
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