Greetings,
Since about a month back I started to pickup some stumbling which gradually increased over time into misfires, limp mode and flashing CEL. The codes were always P0300 with a P0301 variably through P0306.
SP542:
I never had a problem with the OE plugs, however figured it might be possible that the gaps had opened up and others were having luck with the SP542 plugs. I purchased a set, gapped to .025 per Whipple, no changes.
Octane:
Next I figured I had bad gas, topped off the last ten gallons with 93 from Shell and added a bottle of VP octane booster, guaranteed to raise 10 gallons 80 points, should raise my 38 gallon around 2 octane. The problem seemed to clear up, for awhile.
Just yesterday I had another massive misfire event, limp mode and flashing CEL. At this point I was actually getting pretty worried and as such back to the internet.
Weephole:
Ah, the 1/16" weephole. The concept makes sense to me as I live in Florida where the temperate dewpoint spread is within 1 to 5 degrees at some point each day. Before I committed to drilling a hole I wanted to pick a good location and actually look into the Whipple CAC for evidence of water. After popping the oil changing cover I loosened the discharge hose and took a peak inside, COMPLETELY dry. However, I cannot share the same findings with the silicone hose which had a sheen of Mobile 1 throughout it. It was then that I knew what the problem was.
TIP MAP:
I popped the TIP MAP sensor just in front of the throttle body off the intake tube and sure enough, covered in Mobile 1. Cleaned her down with CRC MAF spray and took for a test drive. No less than 10 WOT runs with all the nannies off to 80 with ZERO issues. At this point, all I am seeing is -1.9 to -2.4 volts on the knock sensor at WOT above 5200 RPM and I am contributing that to the 91 degree intake temperature.
In conclusion, if you have hesitation, misfire codes, limp mode and/or a flashing CEL please consider a $12 solution first.
Just bought a Stage 3 catch can.
Since about a month back I started to pickup some stumbling which gradually increased over time into misfires, limp mode and flashing CEL. The codes were always P0300 with a P0301 variably through P0306.
SP542:
I never had a problem with the OE plugs, however figured it might be possible that the gaps had opened up and others were having luck with the SP542 plugs. I purchased a set, gapped to .025 per Whipple, no changes.
Octane:
Next I figured I had bad gas, topped off the last ten gallons with 93 from Shell and added a bottle of VP octane booster, guaranteed to raise 10 gallons 80 points, should raise my 38 gallon around 2 octane. The problem seemed to clear up, for awhile.
Just yesterday I had another massive misfire event, limp mode and flashing CEL. At this point I was actually getting pretty worried and as such back to the internet.
Weephole:
Ah, the 1/16" weephole. The concept makes sense to me as I live in Florida where the temperate dewpoint spread is within 1 to 5 degrees at some point each day. Before I committed to drilling a hole I wanted to pick a good location and actually look into the Whipple CAC for evidence of water. After popping the oil changing cover I loosened the discharge hose and took a peak inside, COMPLETELY dry. However, I cannot share the same findings with the silicone hose which had a sheen of Mobile 1 throughout it. It was then that I knew what the problem was.
TIP MAP:
I popped the TIP MAP sensor just in front of the throttle body off the intake tube and sure enough, covered in Mobile 1. Cleaned her down with CRC MAF spray and took for a test drive. No less than 10 WOT runs with all the nannies off to 80 with ZERO issues. At this point, all I am seeing is -1.9 to -2.4 volts on the knock sensor at WOT above 5200 RPM and I am contributing that to the 91 degree intake temperature.
In conclusion, if you have hesitation, misfire codes, limp mode and/or a flashing CEL please consider a $12 solution first.
Just bought a Stage 3 catch can.
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