If you watch the video, the actual owner/operator of the dyno wrote "253 bhp at the wheels" so I think he would know what his equipment measured. Also 253 WHP is close to what the 300 hp STI measures on a chassis dyno, which makes sense considering the two cars have very similar drive trains, weight, and acceleration performance. So either the STI (and Golf) specified engine outputs are severely underrated, or the FOcus RS engine output is severely overrated. Which do you think is true?Saying 253bhp at the wheels isn't correct.
BHP and CHP are primarily the same thing. The power to the crank, bhp typically without loss of power from accessories, gearbox, etc.
WHP is the power that makes it to the ground after drivetrain loss which can range from vehicle to vehicle.
Chassis dyno's can be setup to throw out all sorts of random numbers, they are completely meaningless without a frame of reference. I am inclined to believe the other chassis dyno results over this one because:Lol I'm just giving you textbook definitions and pointing out the differences but hey, I'm always open to the "agree to disagree".
Now here's another dyno chart. What're your thoughts on this ? This is for the Ford Focus RS btw
As well, we're looking at a 15ish% drivetrain loss, wheres subarus have been known to lose 20-25%
I am not trying to suggest that it is a horrible car, I am sure it is a fun car regardless. But let's face it, the only reason anyone would pay double the cost of a regular Focus (which looks virtually the same inside and out), is for the added performance. How quickly a car accelerates is a very important aspect of performance, obviously it is not the only aspect, but it is certainly a very important one. For example; if it was identical in every other way, but only had say 150 HP, would it still be as desirable? I don't think so, just ask Subaru BRZ or Toyota 86 owners.I'm just saying there's way more factors to consider aside from horsepower. But nonetheless, you seem dead set on this and we're obviously not going to get any certain results until we have many more tests and find an average in that. I still don't believe that something isn't right, especially with a claim that it's "losing 100hp". That's just not fathomable.
The dyno chart that I posted is coming from a well known performance company. If anything, they would have wanted to "change their settings" to show the initial power lower than manufacturer spec so that when they tuned it, it would show a lot more. But, it most definitely could be a conspiracy, what do I know ?!