[Diy_efi] inertial vs brake

[Erik Jacobs]

> > A question -- couldn't one test at less than WOT on
> > an inertial dyno (Dynojet) to get different load
> > conditions?
>
> Kinda.  ;)  As you get closer and closer to a
> load/speed site that makes exactly the power that the
> drum loads via inertia, the more accurate your power
> reading (and tune) become.  How far from optimal it
> ever is is another story.  And it's significantly more
> of a pain trying to tune for a load/speed site when
> the engine never stays there.

well my argument was more aimed at reaching other portions of the ECU map
than the WOT curve, which is typically all you test when you do a dyno pull.
It seems that if your ECU was using separate mappings for WOT and otherwise
(as most factory ECUs do), that you would never really get to "test" your
non-WOT mappings out with an inertial dyno.

On a side note, is there anyone in the states who uses brake dynos capable
of 300ish WHP??  I know there are plenty of Dynojets floating around.. but
how many brake types are out there and in the hands of good tuners??


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi