Here is the curve fit of the Car and Driver performance data (578 points):
ET,sec = 3.9 + 5.93 * LN( 0-60,sec )
Avg absolute error (abs(pred ET - act ET)) is .0062 sec
This relationship can be combined with the following general correlation:
1/4 ET, sec = 5.825*(wt, lb/road HP)^.3333
Trap speed, MPH = 234*(road HP/wt, lb)^.3333
(Notice that ET = 1363/Trap Speed)
For the 96 Maxima 5sp, avg performance seems to be 6.7 and 15.2
15.2 would give a calc 0-60 of 6.72. Pretty good...
And for a wt of 3050, an ET of 15.2 => HP = 172 at the road.
HP ratio is 172/190 = .905
Seems pretty good...
Shaun's dyno showed 179.
OK, starting with Shaun's numbers...
179 and 3050 => 15.0 ET and 6.5 0-60
C&D SMX numbers were 6.4 and 15.1... Pretty good!
BTW: An ET of 14.8 requires a HP of 186 and give a 0-60 of 6.3