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LX MT 2.0 vtec activation

Discussion in 'Engine / Exhaust / Transmission / Tuning' started by LX6MT, Aug 26, 2016.




  1. LX6MT Member

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    So, I've finally gotten past the 600 mile break in period and I decided to get on the throttle a little in my LX MT 2.0. I'm having trouble feeling and hearing vtec at all... At what RPM does Vtec kick in? I watched a video online and it sounded in that video like it kicked in at 6500... if that's the case however, whats the point of only having vtec for 200rpm, since redline is 6700!?

    P.S. Apologies if there is another thread talking about this, but I couldn't find it, If you could either provide thoughts / answers or send me to the right place, it would be greatly appreciated!

    Thanks!
     
  2. DarkLight

    DarkLight Senior Member

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    Engagement should occur around 6,100 rpms, but it will only engage in 3-4th gear, not 1-2nd. Personally, I think the stock VTEC tune was optimized for the CVT-equipped cars, since engagement will be continuous in their 'L' mode, which is why some feel that the LX w/ CVT is faster.

    However, I'm not stock anymore so mine engages at 5,800 rpm's in all gears and makes power to 7K rpm's. Much nicer than stock IMO.
     
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  3. OP

    LX6MT Member

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    What do you have done to yours?
     
  4. DarkLight

    DarkLight Senior Member

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    -93 Octane tune with KTunerFlash
    -High flow CAT modification
    -Knife-edged throttle body w/2mm overbore and half-shaft
    -valve cover breather
    -Flowmaster DBX w/ straight pipe
    -upgraded torque rod(see my tutorial in DIY section)
    -Mishimoto catch can

    I'll be getting the AEM CAI and a prototype downpipe soon, then I'll dyno. If I'm not happy with N/A, at least 180 whp, then I'll sell the bolt-ons and go turbo.
     
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  5. LX16

    LX16 Senior Member

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    The reason you can't feel or hear it kick in, is because it doesn't have VTEC.
     
  6. DarkLight

    DarkLight Senior Member

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    You would be wrong about that.

    It has a 3-lobe cam on the intake. Single lobe on the exhaust.
     
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  7. jk147

    jk147 Senior Member

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    Not to try and sound offensive, with these mods already .. why didnt you get a turbo from the get go?
     
  8. DarkLight

    DarkLight Senior Member

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    http://hondanews.com/releases/2016-honda-civic-sedan-press-kit-powertrain?page=2

     
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  9. DarkLight

    DarkLight Senior Member

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    Tuning software is not finished being developed. So I have to wait.

    I am also looking into the possibility of swapping a K24W1 block, which is high compression, 11.6:1, so it would not make sense to do a block swap and then turbo without installing lower compression pistons.
     
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  10. LX16

    LX16 Senior Member

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    My bad, I don't know why, but I thought it only had the VTC.
     
  11. indexcow Senior Member

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    @DarkLight Hey man i also have a 2.0 and want to get some more grunt without voiding my warranty. Would that be possible with any of the modifications you made?
     
  12. DarkLight

    DarkLight Senior Member

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    My warranty gave up the ghost a while ago. The reflash alone will void the warranty, never mind the other engine mods.

    The AEM CAI, muffler swap, and catch can should be good, but check with your dealer first to be safe.

    Also, you could probably get away with sending your throttle body off to Max Bore for modification, but that is expensive and the gains won't be worth it to most people. A downpipe will definitely void the warranty too.
     
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  13. indexcow Senior Member

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    @DarkLight Forgive my ignorance but which CAI are CARB certified for our car?
     
  14. DarkLight

    DarkLight Senior Member

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    According to AEM, the intake is not CARB certified, but they are probably working on it. You could contact them directly if you want a definitive answer. Injen is supposed to be working on one too, so you could ask them as well.
     
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  15. indexcow Senior Member

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    @DarkLight Alrighty, thank you:)
     
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