Is there a such thing as "too much air" for the LT1 at low RPMs? I've always had stumble/hesitation when you hit the gas harder than normal from idle. Here's a sample reading of when it goes from just hitting the gas pedal to ~3 mph with the stumble:
1) TPS Volts: 1.18
RPM: 575
MPH: 0
Cell/BLMs: 18 / 129/124
Knock retard: 0
MAP: 0.56
MAT volts: 1.84
Air flow: 18.89
Spark timing: 28
2) TPS Volts: 1.31
RPM: 700
MPH: 0
Cell/BLMs: 18 / 128/124
Knock retard: 0
MAP: 0.88 <--- normally not this high?
MAT volts: 1.84
Air flow: 37.91
Spark timing: 12 <----- this looks abnormal?
3) TPS Volts: 1.35
RPM: 875
MPH: 2
Cell/BLMs: 18 / 128/124
Knock ret: 0
MAP: 0.90 <---- getting higher
MAT volts: 1.84
Air flow: 31.77
Spark timing: 12 <----- still this low??
4) TPS Volts: 1.35
RPM: 1275
MPH: 3
Cell/BLMs: 18 / 128/124
Knock ret: 0
MAP: 0.84
MAT volts: 1.84
Air flow: 37.84
Spark timing: 19 <---- getting back to normal?
5) TPS Volts: 1.33
MPH: 4
Cell/BLMs: 10 / 138/132
Knock ret: 0
MAP: 0.75
MAT volts: 1.84
Air flow: 39.63
Spark timing: 27 <----- back to this number and beyond after this point.
The only thing I'm seeing here a dip spark timing, yet no knock...and the MAP (and the air flow a bit) goes way beyond any other time I normally accelerate from idle. Does anyone know what this is a sign of?
Thanks so much in advance
1) TPS Volts: 1.18
RPM: 575
MPH: 0
Cell/BLMs: 18 / 129/124
Knock retard: 0
MAP: 0.56
MAT volts: 1.84
Air flow: 18.89
Spark timing: 28
2) TPS Volts: 1.31
RPM: 700
MPH: 0
Cell/BLMs: 18 / 128/124
Knock retard: 0
MAP: 0.88 <--- normally not this high?
MAT volts: 1.84
Air flow: 37.91
Spark timing: 12 <----- this looks abnormal?
3) TPS Volts: 1.35
RPM: 875
MPH: 2
Cell/BLMs: 18 / 128/124
Knock ret: 0
MAP: 0.90 <---- getting higher
MAT volts: 1.84
Air flow: 31.77
Spark timing: 12 <----- still this low??
4) TPS Volts: 1.35
RPM: 1275
MPH: 3
Cell/BLMs: 18 / 128/124
Knock ret: 0
MAP: 0.84
MAT volts: 1.84
Air flow: 37.84
Spark timing: 19 <---- getting back to normal?
5) TPS Volts: 1.33
MPH: 4
Cell/BLMs: 10 / 138/132
Knock ret: 0
MAP: 0.75
MAT volts: 1.84
Air flow: 39.63
Spark timing: 27 <----- back to this number and beyond after this point.
The only thing I'm seeing here a dip spark timing, yet no knock...and the MAP (and the air flow a bit) goes way beyond any other time I normally accelerate from idle. Does anyone know what this is a sign of?
Thanks so much in advance
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