Stopped by a shop and had a dyno run today. About right on from what they say it should be. Slight concern on AFR though. Thoughts? Sorry for the crappy YouTube, but I had to shoot it from 30 feet.

Dyno 2012 Mercedes CLS550:

 

Are they correcting for powertrain loss and reporting 433hp at the engine? Or do you have this car modified? For a stock car should be around 375-390hp at the wheels.

 

It is calculated at the wheels and is not adjusted. 433hp and about 525tq. Only mods are the resonator is removed and Kleeman tuned the computer. So with a 15% loss added back, it would be 509HP and 617tq.

 

What are your concerns on the AFR?. did they use a wide band during the pulls? As far is your dyno output numbers, I think that you are spot on with other tuners like Dyno-comp which got 443whp/520lb-tq on a Dyno Dynamic dyno: see link below

http://www.dynocomp.com/details.php?...90#detail_1191

 

did you ran a baseline dyno pull?

 

I did not do a baseline. AFR was measured with a wide band in the exhaust. I am happy with the results, as they are slightly better than Kleeman advertised. I thought the AFR's should not be over 12-12.5 at full throttle.

 

Nice! Congrats.