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  1. 07-21-2015, 03:17 PM #1
    marc777
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    How high on RPMs can a stock 4 tec go?

    Want To get a little more speed out of my GTX supercharged.Heard Of modified ECUs. Any Input or Suggestions??
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  2. 07-21-2015, 04:11 PM #2
    Branden
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    i have been spinning my stock motor to 9k for a while now with nothing more than good springs and retainers.
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  3. 07-21-2015, 06:48 PM #3
    marc777
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    WOW!!!! How did you get to 9g??
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  4. 07-21-2015, 06:49 PM #4
    marc777
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    OK. I see your Specs
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  5. 07-21-2015, 06:56 PM #5
    skidoochris
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    9K is common around here
    now 10K is spinning ...
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