Q regarding Big Air air filter

 


    Howdy, all.  Got a question please, with regards to a new open air filter I
    just installed...

    I ride a 2001 Kowasocky Vulcan Classic 1500, with EFI and liquid cooling.
    No problems, I THINK.

    After riding in hot weather and the engine heats up, say, at red lights, I
    pull into the garage and shut the motor off.  I KNOW I hear something
    BOILING behind the air cleaner between the cylinders.  It goes away after a
    few when the engine has started to cool down.  If I've been able to cruise
    a bit before shutting down, to let the engine cool a bit, no boiling sound.
     My mechanic is at a loss to explain what it is.

    This never happened with the stock air cleaner.  Anyone have any ideas
    please?

    Cheers.

    Rokko



--

  "Up In The Great White North, eh"



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It's coolant boiling because it stopped circulating when you shut the
engine off.
There's a lot of residual heat in that big engine.

The engine is running a bit leaner with less air restriction, so it
gets hotter.

Can you find a Power Commander that fits your bike? If so, re-map the
FI for richer mixture at small throttle openings, or adjust the
throttle position switch so the ECU goes rich a little sooner.

If you don't want to do all that, go back to the stock air cleaner.

 




This "mentality" of tinkering with modern bikes leaves me cold.
What did you hope to accomplish by changing the air filter?
You already have an engine big enough to power a small car and any
"tweaking" that you do isn't going to change the performance enough to
notice.
Put the stock air cleaner back on it and stop screwing around with it.
Did you buy it to ride or to dick with until you really break something ??

 


    By changing the air filter I hoped to gain a bit more horsepower, not for
    general riding, but for higher altitudes while riding through the mountains
    with a passenger and a trailer.  As for f***king with it, to answer your
    question, I only planned to put on a trailer hitch.  I have no desire to
    change anything else.

    I'n not an 'expert' at motorcycle mechanics, or a motorbike mechanical
    expert, but I did get the opinion of three different sources that suggested
    that getting an open air filter is a good idea for the type of riding I
    want to do.

    Cheers!

    Rocky


--

  "Up In The Great White North, eh"



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As usual, I picked the wrong guy to jump on!

Sounds like you have a legitimate need for a better "tune".
Simply changing the air filter won't accomplish that but with the PCIII, you
should be happy when you find someone who REALLY knows how to set it.  You
may need to contact the maker of the PCIII for help with that.  It may
require a different "map" when at altitude.