I do know EFI indicates improved gas economic climate and there are Mercury repair outlets everywhere, but that may be of minor ease and comfort when stranded 20 miles from your ramp.Also, I do know Mercury's 4-stroke are made by Yamaha (or not less than a great part of it), https://birkin-3580109.ja-blog.com/34487313/everything-about-suzuki-marine-engine-performance