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Wolverine Exhaust Tips in Stock!!!

This is a discussion on Wolverine Exhaust Tips in Stock!!! within the Hunterworks forums, part of the Supporting Vendors category; Feels like a totally different bike...

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Thread: Wolverine Exhaust Tips in Stock!!!

  1. #21
    Mechanic
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    Feels like a totally different bike

  2. #22
    Engineer TINKEN's Avatar
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    Quote Originally Posted by Deeyoh View Post
    Wonder what the AFR difference is with the AIS on and off. Just curious how much it changes the wideband reading.
    I'm not sure it really did make a difference, maybe, but not in the way I originally thought it would. The ais pumps air into the header to aid in burning excess fuel which would show a false reading across the lambda sensor. Originally I thought it might be showing a leaner condition than what really existed. Common sense would dictate the retraction of fuel. The opposite was actually the case here. I boosted the fuel up to 10% in a nonlinear envelope down the fuel path which smoothed out the power band, possibly ending the mid-range stalling issues. I made several other changes to the beginning and wide open throttle areas for reliability as well, including an extra timed addition of fuel for whiskey throttling. Ignition timing changes are less abrupt and safer now. So over all, it was a combination of changes which made the difference.

    In my experience, the lambda sensor should be used as a guide to fuel tuning, but should never be considered an absolute. There is so much more to tuning engines than just placing a number in a map. Anyway, I would love to dive further into theory of fuel tuning, but we'll save that for the fuel tuning thread.

  3. #23
    Mechanic Texaswolverine's Avatar
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    Maybe the stalling issues have to do with sea level Height? Mine doesn?t stall and I live in Texas, just a little above sea level.

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  5. #24
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    So, has anybody with a stock 708 (no tuner no pcv no ais block off) had problems after installing the hunterworks tip?

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