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Need more horsepower! 93 Impreza 1.8L
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Thread: Need more horsepower! 93 Impreza 1.8L

  1. #1
    Noobinator
    Join Date
    Sep 2009
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    Default Need more horsepower! 93 Impreza 1.8L

    Hi,
    I have a 93 Impreza with the base 1.8L engine.
    I thought it had something wrong with it, but the service mgr at the dealership said that they were just weak back then.
    Does anyone know of a way to boost the horsepower without putting a ton of money into it?
    Thanks,

    Chris

  2. #2
    Suby Talker
    Join Date
    Nov 2009
    Location
    cleburne tx
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    Default

    Hi,
    on the 1.8 your pretty much stuck. I would however start with basics. Have the fuel injectors cleaned, new air cleaner or adapt cold air intake, depending on local laws a less restrictive exhaust would be worth a few hp. Of course judging by the age of your car it could just need a much needed freshing up. We have machined some 1.8 heads using our Newen Contour BB seat machine putting a "raised" seat in it and gained some real world cfm on the flowbench and hp on the dyno. Hope this helps you get started in the right direction. Feel free to call us for any other questions.

    thanks
    Eric
    AMS
    5-axis cnc cylinder head porter
    master machinist/engine builder
    1-800-210-8675

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