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 a pop-top roof eventually).
Modify engine air supply piping. (integrated with a 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, 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.
Categorie link pages:-
Reviews.
Permanently fitted or available
Mechanical and electrics.
Engine air supply.
Thanks for reading.

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