Problem being that an engine being NA vs. FI means nothing... If anything FI on small engines is better. It's THE only way small engines can hold a candle to larger displacement engines in the HP gain for your money in the aftermarket. Try and gain 50 or 100HP off of an NA 4 banger with a grand or 2. Can't do it. Yet it can be easily done with a ton of turbo 4 bangers that were produced. The only thing NA has going for it is that for some reason (that I can't understand) people seem to be impressed by high output NA engines vs comperable FI engines. So basically it's a marketing tool certain people buy into.