Using subjective evaluation terms such as "undetectable" is not helpful. The facts are that the certified HP for the 2013 Genesis 5.0 Tau V8 is that it delivers 421 HP @ 6400 RPM with regular fuel, and 429 HP @ 6400 RPM with premium fuel. Very similar differences exist for other Tau versions and model years. Those are the facts Jack. As I clearly stated, it is up to each person as to whether the extra HP is worth the extra cost of premium,
but the extra HP is real.
Never once said otherwise and yes all 8 hp such as in Sear Craftsman lawnmower power are in fact real, no argument there.
The rest of you post is a mix of ancient mythology based on old engine designs and out-of-date consumer information, especially if the manufacturer specifically says it run on either fuel and gets more horsepower with premium.
Lets see, written by Scientific American in 2007 which means all the 2009 Genisis buyers will have ancient outdated cars in less than 2 years according to you.
If you want to argue that the increased HP is not worth the cost of premium fuel, that is fine, but please stick to the published HP numbers for each fuel. Personally, I do not think the extra horsepower is worth the extra cost, which is why I purchased a V6, but some people may think otherwise.
Which is what my post was entirely about until you made it out to something completely different. You would do extremely well and prosper as a lawyer you know.