Quote:
Originally Posted by w3rkn
Not necessarily so..
Steve Dinan talked about this some years ago. That typical stand alone Dyno testing, doesn't mimic real world pressures in front, or under the hood, etc.
Such testing/tuning needs to be done in a near wind-tunnel like conditions, or on a bench dynamiter.
BMW does their homework, & fluid dynamics are important.
|
Take a look at this thread by @Brings -
http://www.2addicts.com/forums/showthread.php?t=981972
I agree dyno testing does not mimic real world pressures, but you cannot deny the independent findings (in the above thread) of the air intake temperatures remaining the same between the stock air box and the aftermarket intake AND giving increased gains over stock. If the aftermarket intake is giving *gains* under conditions of *less* real world pressures (because dyno fan), then I don't see why it wouldn't continue to do so under *real* world condition as the car is moving. It wouldn't make sense for it to lose power under real-world conditions as its clearly shown above that the IAT between stock and aftermarket (on the highway) are the same and giving an improvement over net horsepower and torque under less than ideal "real world pressures".