The 2011 5.0 has what is called adaptive knock sensors (originally introduced on the s197 bullit), these basically poke around and add ignition timing when applicable, this means it can easily run on 87 or 93 octane and perform to its best potential on either, and yes there would be a power loss when using 87 octane fuel, in fact Ford rated power is on 91, but also claims a 12hp loss if using 87. I have found no claims using ethanol based fuel, but I am sure it may be a few more than that of 91o.
The consumer world needs to realize that a chassis dyno is only a tool and not the holy grail, there is no exact math to "calculate" drive train loss, all the above math is "fuzzy" to say the least. As a dyno owner and operator I can say that the info above is impressive and that the new 5.0 should perform very well, and I believe that Ford has left little on the table for aftermarket to improve on engine airflow (a.k.a. HP). This thing may be pretty rung out as it sits on the lot.
Mustangs are Cheap. I surely wouldn't disagree with that, but they are packed with value. I have been modding these cars for quite a long time as well as pawwing over many other domestic and import vehicles and can honestly say that they are not as "cheap" as the once were.
The fit and finish is great, the quality of materials chosen to manufacturer the components is even better. Anyone with a comment like that surely hasn't set foot in one, nor have they made an intelligent ASSumption.
Ford Mustang owners are loyal follows, most are perfectly happy with a live axle and very few have desire IRS.....................
For a fast track program of only 2 years, the new engine is amazing, and Ford as a company is really starting to shine.
Everyone needs to think less of themselves and a little more to the market that a particular car appeals to, any car as a whole is COMPROMISE (price, comfort, performance, durability)
