Originally Posted by onehundred80
You are getting me wrong again, I was wondering how you spent that money on "go faster gear" not tires,wheels, track time costs etc. Now I know you included these as well.
As to the crank versus wheel hp, I would think you would need quite a calculation to determine the crank hp using the wheel hp, losses are not linear as they compound as the hp increases. Well they did when I was studying mechanics. On the road or track there are a lot more losses to add to the equation.
The 100 k figure is BS and I did not bother to answer that one as everyone seemed to dismiss it as well.
Serious "Go Faster" gear includes such silliness as tires, wheels and the stuff you bought that didn't work when you spent money and time at the track. Otherwise it is just "off the shelf"
In other words you won't get 60 HP and 30% better fuel milage simply from a chip found on Ebay. Not for our cars.
If one were to be selling/adverstising a car, perhaps the actual engine wattage would need to be precise. If you were publishing it as an attribute of the car to enthusiasts that insist on perfection.
SWAG is not enough for braggin' rights as I recently discovered in a previous post. But, extrapolation is enough to exhibit a translation of known facts for the purpose of discussion.
As to accuracy, even the Dyno has slippage and friction issues so it is all suspect if you want perfection to the tenth decimal point. However, for the sake of discussion, quite relavent enough.
Am I wrong here?
roadster with a stick