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Old 10-30-2008, 09:32 PM   #1
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I am no expert on DI, is it normal for the fuel pressure to fluctuate so much? Mine is raning from 400ish up to 1790...
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Old 10-30-2008, 09:37 PM   #2
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Old 10-30-2008, 09:53 PM   #3
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I have been watching my logs, and while the pressure fluctuates dramatically, there is no knock retard, and the fluctuations don't seem to coincide with the "stumbles" it gets under acceleration from time to time. Makes me wonder whats causing the stumbles?
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Old 10-31-2008, 12:30 AM   #4
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I was getting my "stumble" at high RPM's. The PSI would drop to around 500. You should post your data logs.
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Old 10-31-2008, 04:06 AM   #5
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Mine doesn't stumble that high, it's in the 3000-3500 area that it does it. and only under heavy acceleration.
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Old 10-31-2008, 05:27 AM   #6
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get a fuel pump op
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