:shocked: read this (http://wahiduddin.net/calc/cf.htm) :shocked:

Horsepower and Torque:

Power is the rate at which work is done. When the engine torque is turning the crankshaft and power is being delivered, the resulting horsepower may be expressed as:

hp=2*PI*t*rpm/33000

which can be simplified as

hp=t*rpm/5252

where: hp = horsepower, hp
t = torque, ft-lbs
rpm = engine speed, revolutions per minute

so I have a torquemeter in my car and I can read the rpms => so I can always calculate the current hp?
right or wrong? ??? would be cool 8)

EDIT: the european formula would be PS or cf=Nm*rpm/7023 8)

i dont see a reason why it wouldnt work as long as your torque meter is accurate

i reckon yes you can.

i dont see a reason why it wouldnt work as long as your torque meter is accurate
yeah :P I have the stock hyundai torque meter (THANKS HYUNDAI for this meter!!!)..it's the left one of the three meters shown

http://images.cardomain.com/member_images/4/web/448000-448999/448422_15_full.jpg

and I don't have to buy ODBII readers only to give me dynocharts for USD 250-350 :biggrin:

http://www.newtiburon.com/forums/showthread.php?t=862

HOW TO MEASURE HP:

http://www.hardtail.com/techtips/hpexplained.html

I tried to measure hp myself with the torquemeter this weekend on the highway and I learned that the max counts:

I mean in 5.gear it does not really matter at lets say 3000 rpm CONSTANT what the torquemeter says. It counts the max torque one can get at 3000 rpm. So one has to accelerate with full throttle and read off the torque and rpms at the same time (my girlfriend helped me but still it's difficult because one has to be fast).

The torquemeter is not very detailed and the rpms aren't too, so I think it's impossible to say whether an air-filter has added 2 or 5 hp...but for "guesstimates" it's sufficient ;) and the max torque ist a little above Nm 185 which is in line with the reported max torque of Nm 186..

I think I'll buy the software from www.autoenginuity.com to get more precise data.