[Diy_efi] inertial vs brake

[Dave Dahlgren]

All I can say is if you want a good tune and want to hit every point on a map go
to a shop that has a servo controlled brake either eddy current or water but ya
gotta pull the engine out of the car if you want the real deal. The simplest
tuning strategy is to set the servo to the rpm of interest and slowly apply load
and map away move to the next and do the same until you are done. Inertia dynos
seem to be for the weekend warrior that is not willing to go the extra mile for
the best possible tune.
Dave

Erik Jacobs wrote:
> 
> =====
> Dnojet Research of Belgrade, Montana invented the "inertia" dynamometer in
> 1989 to test motorcycles. In 1994, it introduced the first inertia dyno for
> cars and light trucks, the model 248C. An inertia dyno differs from a brake
> dyno in several ways: 1) it has no active power absorption device 2) it's
> more accurate, 3) it's less expensive, 4) it's easier on the vehicles being
> tested and 5) it's easier to use. Some of the technology that made an
> inertia dyno feasible was the personal computer's ability to make rapid
> computations
> =====
> 
> Adam you should really write to this guy....
> 
> http://www.idavette.net/hib/dynojet/
> 
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