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    Severe idle problems after TB/Plenum/O/R X-pipe install

    I believe the TPS is a motorcraft part, everything should be torqued to spec, and I did use new gaskets... I also checked for vac leaks, etc.... So I'm clueless.
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    Severe idle problems after TB/Plenum/O/R X-pipe install

    I installed these 3 things at the same time on my 1999 GT, and also used some DIY mil eliminators to hook to my rear O2 sensors to make sure I didn't get a check engine light. Well, after installing all of this, I have severe idle issues. It's very random, sometimes at a stop the car will...
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    Tryin to fit subwoofers in the trunk.

    Ah my bad, you're right... I completely missed that.
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    Tryin to fit subwoofers in the trunk.

    Mine is in a huge ported box, which is why I could only fit 1. If he were to go with a sealed 2.5^3 ft box (1.25^3 per sub) then theoretically he could fit 2 12s in just about the space that I fit 1. And as far as the 1.25^3 per sub goes, that's more than enough for a sealed enclosure...
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    Tryin to fit subwoofers in the trunk.

    I completely disagree with this. It all depends on the speaker you get and the amp you use.
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    Tryin to fit subwoofers in the trunk.

    E-mail a guy named Ken Smith at [email protected] He made a custom box for my 99 to my specifications (cubic feet, port size/tuning, etc) and only charged me $80 shipped. This was for a 2.5^3ft ported box (big box, takes up my whole trunk almost) for a single 12.
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    Gains from 75mm TB and new upper intake plenum on 99 GT?

    I am considering purchasing a 75mm TB and an upper intake plenum for my 99 GT, and was wondering what kind of hp/tq gains I could expect if I were to do so... The car is stock except for CAI and flowmaster mufflers for now. Also, what kind of additional gains would I see from adding a TB...
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