Can't Get the Car to Stop Stumbling at 11psi+ Need Input
#1
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Location: 1 foot in Boston 1 in NJ
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Can't Get the Car to Stop Stumbling at 11psi+ Need Input
PROBLEM: My car stumbles above 5000rpms at 10.9 psi with the afr set to 11.5-11.9.
SETUP:
-Tech Edge 2b0 wideband, latest firmware/software, digital display and datalogit out -readings match. The unit is grounded directly to the battery.
-Bosch 5 wire 7054 sensor with less than 2,000 miles on it. The previous sensor had about 10,000 miles on it and gave me the same readings. I have tried recalibrating both.
-Leading Coil: 20,000 miles verified to be in good shape by the previous owner (ie ran 14lbs without an amp. Prior to that I was using my original coil with 70,000 miles. I had the same problem with both.
-Plugs: Stock 9s all around with less than 3,000 miles on them
-PFC
-Ignition amp: none
-Ground straps galore.
-See sig for the rest of the mods
ADDITIONAL INFO:
-voltage in the datalogs is 14v about 98% of the time and occasionally drops to 13.8, but there is nore correlation between the drop and stumble.
I've been chasing this problem for a long time, so any help will be appreciated!
SETUP:
-Tech Edge 2b0 wideband, latest firmware/software, digital display and datalogit out -readings match. The unit is grounded directly to the battery.
-Bosch 5 wire 7054 sensor with less than 2,000 miles on it. The previous sensor had about 10,000 miles on it and gave me the same readings. I have tried recalibrating both.
-Leading Coil: 20,000 miles verified to be in good shape by the previous owner (ie ran 14lbs without an amp. Prior to that I was using my original coil with 70,000 miles. I had the same problem with both.
-Plugs: Stock 9s all around with less than 3,000 miles on them
-PFC
-Ignition amp: none
-Ground straps galore.
-See sig for the rest of the mods
ADDITIONAL INFO:
-voltage in the datalogs is 14v about 98% of the time and occasionally drops to 13.8, but there is nore correlation between the drop and stumble.
I've been chasing this problem for a long time, so any help will be appreciated!
#6
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Originally Posted by GoodfellaFD3S
car is fixed. b10egv's in leading.
I'm now running at just under 15psi with the afrs at 11-11.5 and the car feels great.
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