Overview,.
Items in “grey” are still to-do.
Items in “mauve” need to be fixed, replaced, upgraded or we need more.
Items in “brown” are under construction.
Items in “green” are almost completed or on order.
Items in “black” completed.
Items in “italics (any colour)” are listed in another category, (see links).
Roof level engine air intake, (integrated with pop-top roof eventually).
Modify engine air supply piping, (integrated with pop-top roof eventually).
Cyclonic dust filter on the engine air intake, (before the main filter).
Washable main air filters on the engine air intake.
Cold start fluid injection point, (not good for the engine, so very last resort).
More info and Photos and a full write-up to follow soon.
Other related or affected items.
EE20 Subaru engine.
Engine control, (Mapping still not correct).
Fuel system.
Oil system.
Engine cooling.
Exhaust system.