DynoTune, full exhaust or no?

Discussion in '6th Generation 2002-2013' started by Hero Danny, May 8, 2018.

  1. Hero Danny

    Hero Danny New Member

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    Going to get my VFR dyno tuned. It's going to cost me $400 so I want to make sure I have all the mods done before I get the bike dyno tuned.

    I currently have the following mods.

    -Delkevic slip on exhaust (no baffles)
    -Power Commander 5 (coyze map)
    -O2 sensor eliminators
    -K&N Air Filter
    -PAIR Valve blocked
    -Flapper delete
    -Snorkel delete

    Should I get the Delkevic exhaust headers as well? I know they are catless so I feel like that should help improve some extra power.

    This isn't a track bike, just a commuter bike, I heard that switching to a catless header may actually cause you to lose bottom end power and only gain it on the top. I'm overall pretty satisfied with my top end power so maybe it's not worth the effort. I mainly want a little bit more grunt down low and mid range (basically before VTEC) and I want the bike to run a lot smoother if possible.

    Also any other mods I'm forgetting? Again this is a one and done deal for me. So I want to be sure I have all the mods completed before going, I don't want any regrets! Thanks.
     
  2. Trakrat

    Trakrat New Member

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    I don't like losing any low end power and I've read the cat and honda's stock headers really helps. There are numerous postings against using aftermarket headers. There is a gentleman here that knows quite a bit about this. Perhaps he'll see this post and chime in. I believe the only recommended header was a heldmann??
     
  3. OZ VFR

    OZ VFR Member

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    $400 for a dyno tune?
    Man you're getting bent over.
    Is it a Dynojet dyno?
    This would be the first thing I've seen that is dearer than here in Oz.
     
  4. Hero Danny

    Hero Danny New Member

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    Yeah, it's an official dynojet place. They have an incredible showroom with all kinds of cool exotic bikes (including some VFR400's!) They said they would need the bike for two days. They usually tune race bikes, so I figured they knew what they were doing. The price did seem a bit high to me as well.

    There is another place but it's like an extra hour away that said they would dynotune it for me for $250 and it would be done same day, take him like 2-3 hours. He has good reviews but mostly works with Harley's so I was a little hesitant to use.
     
  5. OZ VFR

    OZ VFR Member

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    They might be charging for reputation, not actual work.
    A Dynojet dyno tune is basically automated.
    They plug the PCIII to the computer while bike is on dyno, and the computer does the rest.
    It takes 30 minutes to do the actual tune.
    Are they doing anything else?
     
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