Thread: scangauge showing misfires?

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  1. #1 scangauge showing misfires? 
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    so with my ngk tr55's my scangauge was showing 2-6 misfires but the car is running fine no sputtering or nothing like that but I am getting up to 4 degrees knock...switched over to ngk tr6's same problem..anybody have an idea what it could be? maybe try autolite 605s?
    3.6 pulley, tune, ported lim, fenderwell, 3" DP, PLOG, 180 tstat
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  2. #2 Re: scangauge showing misfires? 
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    Quote Originally Posted by IntimidatorSS View Post
    so with my ngk tr55's my scangauge was showing 2-6 misfires but the car is running fine no sputtering or nothing like that but I am getting up to 4 degrees knock...switched over to ngk tr6's same problem..anybody have an idea what it could be? maybe try autolite 605s?
    I think Scangauge is a big piece of ***. In my 01 GTX, with no mods, i have 35 degrees of knock retard. . And in my GP 08 completely stock , i have 25 of KR. I dont trust anything now with that gauge.
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  3. #3 Re: scangauge showing misfires? 
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    Yea I honestly dont know how I could be showing any misfires with 2 different sets of plugs but the yet the car runs fine
    3.6 pulley, tune, ported lim, fenderwell, 3" DP, PLOG, 180 tstat
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  4. #4 Re: scangauge showing misfires? 
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    I think Ill try out AL605s gapped at .55 and see if that changes anything
    3.6 pulley, tune, ported lim, fenderwell, 3" DP, PLOG, 180 tstat
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  5. #5 Re: scangauge showing misfires? 
    pssssshhhhhhtt Jomamma's Avatar
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    Most likely it's not the gauge.

    My gauge would show misfires at idle, but they were barely noticeable and very minor. It was confirmed by a professional scan tool, it got the same reading.


    As for the knock, do you experience that at idle?
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  6. #6 Re: scangauge showing misfires? 
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    yea I would get like 2 misfires at idle when id rev it up then they'd go away..no knock at idle
    3.6 pulley, tune, ported lim, fenderwell, 3" DP, PLOG, 180 tstat
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