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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 12-24-2017, 09:45 PM   #1
jdm14
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I went through this on my Ka-t and it was pretty terrible. It would go way too rich in the low end, then lean out. I turned up the fuel map thinking it was tune related, but really my fuel pump was just dead and couldn't keep up. The first thing to do is figure out whether this is a tuning issue or something related to the actual mechanical engine. What are you using to tune?


Enthalpy ecu. Just replaced the fpr with a tomei thinking it would help. No change.


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Old 12-24-2017, 10:34 PM   #2
apex128
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Enthalpy ecu. Just replaced the fpr with a tomei thinking it would help. No change.


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Could be a faulty maf sensor. Are you sure the injectors and maf match the tune also?

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Old 12-24-2017, 10:35 PM   #3
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Could be a faulty maf sensor. Are you sure the injectors and maf match the tune also?

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Ya. Im sure. How do you suggest to troubleshoot the maf?


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