2008 Toyota Prius Owners Manual - Page 387
2008 Toyota Prius Manual
Page 387 highlights
4-3. Do-it-yourself maintenance NOTICE n If you remove the air cleaner filter Driving with the air cleaner filter removed may cause excessive engine wear due to dirt in the air. Also a backfire could cause a fire in the engine compartment. 360 PRIUS_U_(L/O_0802)