DIY_EFI Digest V5 #840

[Clare Snyder]

>
> Date: Mon, 25 Oct 1999 13:52:53 -0400
> From: "Bruce" <nacelp at bright.net>
> Subject: Re: eectuner
>
> Is he totally relying on chassis dyno for the perfect tune?.
> It almost sounds that way.
> Sure hope he's got money.
> Dynos generally make a run alot faster, or under simulated loads, and can be
> off by quite a margin.  Hope he does some in car tuning before calling it
> done.
> Bruce

Depends a whole lot on the Dyno. An inertia dyno will be an uphill battle, but a
good eddy current or Hydrodynamic "rolling road" dyno can get you REAL close,
with a lot less fuss than running on the road or the track. If you can program
in the wind resistance and weight figures for the vehicle, you can simulate the
increase in drag with speed, going up hills, acceleration from a dead stop, and
endless other scenarios.

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