Thread: Map readings?

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  1. #1 Map readings? 
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    So what should be a typical map hg reading for a 98 L67 motor? Both idle and wot and what does hg even mean? Thanks!
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  2. #2 Re: Map readings? 
    GTX Level Member DanGTP's Avatar
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    Idle should be in the 20 In-Hg range and WOT should be 6-8 PSI. Hg is the scientific representation for mercury. In-Hg is a way to measure relative vacuum. Google + Wikipedia are your friends!

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    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85
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  3. #3 Re: Map readings? 
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    Woah. Mine is 10-11 at idle and 46-47 at wot hg that is. Bad sensor?
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  4. #4 Re: Map readings? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    What are you using to monitor these numbers?

    SMGPFC Member #1
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  5. #5 Re: Map readings? 
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    Actron cp9145 scan tool
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