There are many things to compare...
Originally Posted by fpv_gtho
How else do you expect to compare 2 systems and their effectiveness? You want to go to a % gain on the same engine with and without the systems?
milage, torque curve, redline, peak HP, thermal efficeincy (rated in lbs/hp/hr or kg/kWh)
Also a neat fact the S2000 engine actually makes more power when you kill the VTEC system... loses low rpm hp and gets even peakier but has a higher peak hp.
Power, whether measured as HP, PS, or KW is what accelerates cars and gets it up to top speed. Power also determines how far you take a wall when you hit it
Engine torque is an illusion.