Anyone else notice a increase in pack is a increase in power and/or fuel economy when using 93 is E when using 93 rather than 87 octane? It's hard for me to tell because I start because I started using the 93 the same time that I is the same time that I put in new spark plugs, new oil/ filter, new air filter, and liquid moly ceretec. Also wouldn't a more complete burn help with reduced deposits? Timing should be automatically adjusted So that's not a concern on a modern engine. Any thoughts?