Car Runs Rich/loads Up

Discussion in 'Fox 5.0 Mustang Tech' started by selfloader, Aug 31, 2012.


  1. selfloader

    selfloader New Member

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    need some help....my 89 gt had 2 bad injectors, decided to replace all 8 with 24lb. now the car runs rich and loads up at low rpm.........stock throttle body,egr,mass air,gt40,24lb injectors. Any advice would be great!!!!!!!!!!!!!!!!
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  2. fiveohwblow

    fiveohwblow Official Member

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    The MAF and computer are working together thinking you're running 19 lb injectors. You cannot simply upgrade injectors and not the maf and or get a tune. The MAF is the easiest to do. Get yourself a MAF calibrated for 24# injectors.
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  3. selfloader

    selfloader New Member

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    can a stock cobra mass air work? or would it be easier to buy an aftermarket unit....
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  4. fiveohwblow

    fiveohwblow Official Member

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    I believe, and I could be wrong, the cobra PCM was flashed for the 24# injectors. If I am wrong, then yes the MAF will be sufficient.
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  5. selfloader

    selfloader New Member

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    correct cobras came with 24lb injectors........gonna give it a try and see.....Thank you for the tech. support..........
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