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  1. #1
    Junior Member
    Join Date
    Jun 2013
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    More power as usual

    Dear ST owners.

    I come from Iceland and own a ST 2 2003 model, the only one up here in the north....

    Is it rightly understood by me that there is little or nothing to gain by opening airbox / less restricted exhaust with the stock chip / computer brain under the seat?
    The chip / computer brain does not sense more airflow, and therefore does not recalculate the air / fuel mixture.

    I would need to buy a new Chip /computer brain in order to have any gains ?
    If you know the answer please enlighten me with your wisdom !!

    With deep respect for 2 valve heads.
    Heimir Bardason

  2. #2
    Junior Member
    Join Date
    Jun 2013
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    2
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    Does nobody know ??

    I was sure someone here at this forum would have an answer.....
    Heimir Bardason

  3. #3
    Moderator
    Join Date
    Jan 1970
    Posts
    1,949
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    sorry heimer, our resident ST guru appears to be in hibernation at the moment, i,m sure someone more knowledgeable than me shall be along shortly

  4. #4
    Senior Member
    Join Date
    Jan 1970
    Location
    Sleepy leafy South Birmingham
    Posts
    5,138
    Post Thanks / Like
    Yes hacking the rear half of the airbox lid off will give you another 2 or 3 bhp with no other adjustments. It does on the ST4 and the ST4S anyway.
    2001 ST4
    2004 ST4s

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