I was reading socalmmr post on horsepower increase with the filter change. What I don't understand is why are these reading are not closer to the 280hp rating.

DWH

 

look closer at the gear and RPM's it was dynoed at..

'03 G35 Sedan: ivory/aero body/sport/sunroof
Warning: Objects in mirror are FASTER than they appear

 

Plus these are Wheel Horsepower figures, the 280 is at the Flywheel, so there are drivetrain losses.

<font color=blue>Merlin</font color=blue>

 

Do all car figure it at the fly wheel. I can't understand how the BMW 330ci only has 225hp and still matches the G35c from 0 to 60mph

 

All manufacturers figure at the flywheel, the 330Ci has those figures because they are a little lighter, plus you have to ask if they tested an automatic or 5/6 speed stick shift, you always lose a couple seconds with an automatic.

<font color=blue>Merlin</font color=blue>

 

BMW engines do seem a little underrated because they are rated with all their accessories on, the engine is probably closer to 235/240 in "Nissan" terms. Weight has something to do with it, but the coupe will pull ahead past 60.

Andrew

2003 coupe 6MT blue premium aero (on order)

 

Plus, BMW is really good about picking the right gear ratios for each engine/transmission/drivetrain setup.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

In-line sixes tend to be a little smoother and seem to "wind up" faster as well.