Well a lot of Boost and Rocket Fuel can be pretty exciting! At 1500 hp in 1.5 liters, the yield is 16.38 hp per cubic inch. So a 427 Chevy would have to put out 6,994.26 hp to equal the 1.5 liter BMW. That's 1/4 mile dragster engine output, with tear downs after each 1/4 mile.
“there is NO substitute for cubic inches... “
Turbocharger or Supercharger.