I was looking at the RSX Type S and found that in 2005 the car was listed at 210HP. Now it's at 201.

It's mentioned that the new SAE recording method was used. What is this?

 

The Society of Automotive Engineers (SAE) has created a standard method for correcting horsepower and torque readings so that they will seem as if the readings had all been taken at the same "standard" test cell where the air pressure, humidity and air temperature are held constant.

The equation for the dyno correction factor given in SAE J1349 JUN90, converted to pressure in mb, is:


where: cf = the dyno correction factor
Pd = the pressure of the dry air, mb
Tc = ambient temperature, deg C

what it means is that although it was a calculated 210 HP in Denver, CO then it obviously wouldn't be the same in New Orleans, LA. its taking environmental factors into consideration (apparently)

edit: or maybe Malik's answer is correct as well. oh well, i thought what i found was pretty good too fing02.gif

 

http://www.automotivedigest.com/view_art.a...rticlesID=16687

<div class='quotetop'>QUOTE </div><div class='quotemain'>1. SAE defends new yardstick rules for measuring engine horsepower ratings
2. Consumers may see lower ratings on 2006 models, but no change in actual engine power
3. GM will take extra step to "certify" ratings, test in presence of witness
4. Ford does not intend to certify ratings, step is costly and time consuming
5. Honda re-tested all engines in line w/ new standards


Significant Points
1. All new engines subject to new standards w/ neutral witness observing tests
2. Ratings will be more accurate, reflecting real-world conditions
3. Loophole exists as automaker could use premium gas to boost engine performance
4. Toyota will experience some rating changes, will now test w/ regular gas
5. Ford says new rules will have little impact on its testing policy </div>

http://en.wikipedia.org/wiki/Horsepower

http://www.edmunds.com/insideline/do...ticleId=106965

http://home.flash.net/~lorint/lorin/convert.htm

 

would be nice if they all used WHP as well..

Nice to know what the TRUE power train loss is...