http://www.infrastructure.gov.au/roads/vehicle_regulation/bulletin/pdf/NCOP3_Section_LA_Engine_01jan2011_v3.pdf

relevant section:

1.2 MODIFICATIONS REQUIRING CERTIFICATION UNDER LA CODES
The following is a summary of modifications that may be performed under Section LA:

Fitting engines greater than 120% of original power and/or engine mass;

Fitting performance engines;

Fitting engines from non original equipment sources;

Installing a supercharger or turbocharger; and

Modifying the engine and engine components that results in an increase in engine power
of more than 20% and/or affects exhaust emissions.
 

 

Excellent that clears up that one. Thanks for letting us know

Great list Speedzer -
I think the "Govt " view is "any modification" will effect emissions.
I have heard some "Govt people" won't approve a engine from a sedan that's put into a ute (example only)as even though the engine is an option for both cars -you need to prove that the emissions are ok -that gets expensive
-I guess one way out of it is to use the cpu from the type vehicle your modifying -ie dyna would need a dyne cpu if the motor came from bagger- even though its as I understand it the same motor ( not the new water cooled engine).
Basically they don't like modified vehicles.

Okay... So I read that Govt off and the sections do not apply to motorcycles. I fall under section LA3 yet it explicitly excludes motorcycles....whew!