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EGT Probe/Gauge

Discussion in 'ECU's, Electronics, and Tuning' started by YangpaNemsay, Nov 29, 2004.

  1. YangpaNemsay

    YangpaNemsay Senior Member

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    I was doing some research on www.homemadeturbo.com and came across using the EGT Probe/Gauge (Exhaust Gas Temprature).

    What is the purpose of using an EGT Probe?
     
  2. projekteg

    projekteg Senior Member

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    to monitor your exhaust gas temps. you can tell a lot by your egt's. running lean and/or too retarded will cause high egt's, and running rich will generally cause lower egt's, etc., etc.
     
  3. pissedoffsol

    pissedoffsol RETIRED

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  4. drpenguin

    drpenguin Senior Member

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  5. radnulb

    radnulb Senior Member

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    EGTs are very tricky for beginners to use for tuning - they're more useful as a warning that something is going seriously wrong with the tune (i.e. really high EGTs). Unlike AFRs (95+% determined by injector pulsewidth) from a wideband, there are many factors that influence EGTs which often makes it difficult to determine the exact cause without simultaneously knowing other information (injector pulsewidth/AFR, timing, resitrictiveness of exhaust side, ... ... ...)
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    quick run down...

    assuming a WOT run...

    stoich = hottest point
    as you go more rich or more lean the egt cools down. its kinda bell curve shaped.
     
  7. projekteg

    projekteg Senior Member

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    ??? in all my experience, egt's get hotter when running lean, espcecially with too little timing........
     
  8. pissedoffsol

    pissedoffsol RETIRED

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