Hey Franc, not to bust your chops or anything, but where'd you come up with those numbers?
If you're car dyno'd at 193.5 whp then your crank hp would be approx. 236, not 290. Wheel horse power numbers are roughly 82% of crank horse power numbers (which accounts for 18% drive train loss).
The other numbers you posted don't make sense to me.
Originally Posted by Franc
The posted nubers for the NA crossfire are 215 HP while the SLK boasts 229. There is not difference except a perception created by marketing. So using the 229 HP number you get 287.7370 HP.
Even using the 215 HP you get 270HP. Not really "Pushing 300 HP" Still impressive.
The 215 and 229 numbers are crank hp numbers published by the manufacturer - not rear wheel hp numbers. If they were to put those cars on a dyno, they would read roughly 18% less for rear-wheel horse power numbers, such as 176 and 188. Of course, every dyno is a little different, so allow a couple % variation, but you get my point.
So I don't understand your reference to 215 pushing 300.