G'day

Coming up soon is my undergraduate mechanical engineering thesis project. At the uni I have access to an engine dynamometer with a Toyota 2AZ-FE Camry 4cyl engine and I would like to use this in some way for my thesis project. The rig is pretty well setup and can allow for exhaust gas analysis amoung other things.

Previous students have done things like testing different commercially available fuels eg regular, premium etc. Another student is testing a range of fuel additives.

Just wondering if anyone has any opinions as to what would be interesting to test for a thesis project?

Im currently thinking about testing different engine oils to see if there are any variations in frictional power. Also considering testing different air filter material, and anything else that people here might suggest.