How realistic are these numbers vs Dyno? If you look at Enzom's dyno #s he is at 419.11 but yet he is near 119 trap speeds. Using dragtimes.com hp @ the crank calculator: If you plug his #s with their calculations he has 540.85hp at the crank

Can this be right?

Are we losing that much power?

These numbers off of this link belong to housclass but plug your own #s and you get the idea.

http://www.dragtimes.com/horsepower-...8.350&weight=0

 

Using their equation for my Mustang, which dynoed at RWP 386 hp, it says I have 377.77 at the flywheel

See yeah

PS: NOT all DYNO/Equations work all the time my friend

 

I used their calculator and I came up with 487hp on a 12.4 run and 500hp on a 12.2 run.

 

I'm not saying he makes 540hp. The formula probably isn't 100% accurate. You have to remember one thing though. Mercedes purposely downgraded the E55's advertised #s so it wouldn't directly compete with cars like the SL55 or S55. The cars make more than 469 crank horsepower. It makes more like 500 crank HP.

 

SAE does the HP ratings. As the condition improves the HP values also improve. The E55 likely has a wide range in power 470-520.

http://www.sae.org/certifiedpower/details.htm

The cars moving down the track are forcing cool air over and into the engine giving it a huge advantage over a DYNO run.. This is why dyno #s are only a piece of the HP puzzle. On a cool day with high pressure , low humidity and near sea level a car will make much higher hp than it would in the opposite, Add physical altitude and you are really screwed on the dyno ,hence the need for SAE HP standard.

So Enzom and housclass were likely making well over 500 hp , On your sac run you likely made similar hp and the variance can be attributed to traction.