i was checking out the acura tsx board and this is what i saw, someone had a dyno graph:
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Well the peak numbers are all essentially the same.
-----2.5L six-----------2.4L four
HP---170.1------------169.9
[email protected]@2800
Both HP numbers come essentially at redline.
If you do some calculation using a driveline loss of about 14% for both cars (pretty standard), you get at the flywheel:
-----2.5L six---2.4L four
HP---197.8----197.6
TQ---181.7----177.2
Which tells us that BMW's HP number was underrated (which I expected), and that the TSXs torque number was underrated (which we knew from the TOV review). So, the TSX has just under FOUR less lb-ft of torque, but it comes on at 700 RPM EARLIER (i.e. more low-end torque). It looks like the TSX torque curve is flatter, but that's due to the differing scales on these two charts. They're both about the same degree of "flatness".
____________________________________________________-
Well the peak numbers are all essentially the same.
-----2.5L six-----------2.4L four
HP---170.1------------169.9
[email protected]@2800
Both HP numbers come essentially at redline.
If you do some calculation using a driveline loss of about 14% for both cars (pretty standard), you get at the flywheel:
-----2.5L six---2.4L four
HP---197.8----197.6
TQ---181.7----177.2
Which tells us that BMW's HP number was underrated (which I expected), and that the TSXs torque number was underrated (which we knew from the TOV review). So, the TSX has just under FOUR less lb-ft of torque, but it comes on at 700 RPM EARLIER (i.e. more low-end torque). It looks like the TSX torque curve is flatter, but that's due to the differing scales on these two charts. They're both about the same degree of "flatness".
