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Thread: Spark Plugs

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  1. #1
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    Spark Plugs

    Best spark plugs for a Gen IV ACR that sees 90% of it's life on the track.

    Mods are: Gen V intake, 10% lower UD pulley, Arrow PCM, and custom headers.

    Changing out the wires next week and figured I'd look in to changing plugs as well. if needed.

  2. #2
    VOA Member 99RT10's Avatar
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    OEM, probably better plug wires out there though. Running headers with the Arrow PCM? I got the same mods. Ever dyno it?
    09 ACR With all the goodies
    99 ACR TT 99 red RT/10 Roe S/C
    97 B/W RT/10 TT 94 RT/10 TT

  3. #3
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    Quote Originally Posted by 99RT10 View Post
    OEM, probably better plug wires out there though. Running headers with the Arrow PCM? I got the same mods. Ever dyno it?
    It put down 647/613 on a Mustang dyno.

  4. #4
    VOA Member 99RT10's Avatar
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    .......
    09 ACR With all the goodies
    99 ACR TT 99 red RT/10 Roe S/C
    97 B/W RT/10 TT 94 RT/10 TT

  5. #5
    VOA Member 99RT10's Avatar
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    Ported heads? Great numbers!
    09 ACR With all the goodies
    99 ACR TT 99 red RT/10 Roe S/C
    97 B/W RT/10 TT 94 RT/10 TT

  6. #6
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    Quote Originally Posted by 99RT10 View Post
    Ported heads? Great numbers!
    Yes.

    Honestly dynos don't really impress me all that much. You could have a 25-50hp gap on the same day depending on the dyno and it's calibration.

    I always take it to the track to see if it feels stronger because that's what matters to me.


 

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