[1] The resulting engine weighs less than the O-235 and incorporates a throttle body injector system with a tuned intake manifold and dual electronic ignition, or optionally a carburetor in place of the throttle body injector to save further cost and weight.

[1][3][4] When announced in July 2008 Lycoming expected the engine to be available later that year, once ASTM testing for LSA use was completed.

[1] At AirVenture 2011, the company announced that the engine was commencing volume production and was flying in both fuel-injected and carbureted versions.

[4] Renegade Light Sport's Falcon LS was the first airplane to fly with Lycoming's new IO-233-LSA engine on 6 Oct 2010.

[5] Renegade Light Sport is working with Lycoming to produce an aerobatic version of the IO-233-LSA engine to be designated as the AEIO-233.