Thread: Which Pulley and Plugs

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  1. #1 Which Pulley and Plugs 
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    2005 GTP

    I'm installing ZZP headers and catted downpipe with 3in exit to ZZP resonator and ZZP catback, and I already have the CAI, and autolite 605's

    With the above mods and stock pulley, should I stick with the autolite 605's, or can I go to the 104's?


    Next up:
    3.4 or 3.6 pulley?
    Autolite 605 or 104 plugs?
    stock or 180 tstat?


    Anything else while I have everything torn apart?
    2005 GTP - Headers, 3" DP, resonator, and catback, CAI, 605 plugs *Sold*
    2016 WRX Premium - Stage 2 E30
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  2. #2 Re: Which Pulley and Plugs 
    GTP Level Member 04lss's Avatar
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    I would probably go for a 3.5, I had the ZZP 3 inch DP and was seeing 6* of KR on a 3.5, until i started mixing e85. I doubt headers would eat more than 6 * of KR, but thats just my .02 Somone with more experience may be able to give a more definite answer.
    2017 GTI 6mt 320whp 400wtq , 2012 Volvo S60 T6 300hp of Swedish safety, (Sold) 2019 Ford Mustang GT. 460 screaming eagles. 2004 Buick Regal GS "Gramps" Intercooled, corn fed, ported g3 m90, 1.9 rockers, 80# injectors.
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  3. #3 Re: Which Pulley and Plugs 
    GXP Level Member GTPpower's Avatar
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    I would run the 605's.

    I like 180° t-stats because they keep the transmission cooler.
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  4. #4 Re: Which Pulley and Plugs 
    GXP Level Member GTPpower's Avatar
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    And you'll probably still have kr on the stock pulley from time to time. I'd leave the stock pulley on til you get some mods that make a difference.
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