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  1. bwhite8889

    Octane Case Study

    Used the same gas station and tried different octanes/mixes over the course of several months. Found 89 to be the best balance of performance and fuel efficiency.
  2. bwhite8889

    P0420 Cat Converter DIY Fixes Work?

    Since I‘m being told catalytic converters are on back order nationwide, anyone have any experience doing these DIY solutions to clear the P0420 code? https://www.youtube.com/watch?v=KwOGoHfP6-8 1. Cat converter cleaner 2. Soaking cat in dish soap overnight 3. Extending O2 sensor(s)
  3. bwhite8889

    WHOOOSH Sound Under Boost, Normal?

    I recently had the VCT cam phaser job done on my 2018 Expedition. When I got it back I noticed a WHOOSH/hissing sound on the driver’s side while under turbo boost. It doesn’t sound terrible, almost like compressed air being released. Through some research I decided to replace the Blow Off Valve...
  4. bwhite8889

    2018 Expedition Engine Knocking?

    80,000 miles on an Expedition we bought a few months ago. Already had VCT work done to address startup knocking. This new knocking is worse than what I was hearing before the VCT. Already verified it’s not the wastegate actuator arm. I always fill up with 87 octane but last night I added...

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