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    H-pipe installed, but now Check Engine light

    I had h-pipes installed and cats removed, but now the check engine light is on. Is there a way to reprogram the computer to extinguish the light or am I just stuck with it? Thanks for your help!
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    X-pipe or h-pipe?

    Should I go x-pipes w/o cats or h-pipes w/o cats on my 97 cobra? I was told the h-pipe had a more muscle car sound while the x-pipe is more of higher pitch Indy car sound. Is this true? If I go with the h-pipe, should I just keep my oem h-pipe and just cut off the cats? I have Flowmaster 40s...
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    Freshen up '97 Cobra engine?

    Asking the experts - i have a '97 cobra with 130k miles = what things should/could do to my motor to "freshen" it up to bring some of the horsepower back? What things can i do to even add more hp short of supercharging? I've already added a BBK cold air kit and flowmaster 40s. Any advice...