Re: <Misc>:Forced Induction

[dtuten@xxxxxxxxxxxx (Daniel Tuten)]

Howdy Folks -

Actually, the math is a bit off - you're *adding* a percentage to the
base number, what you need to calculate for, is the *originating* number
that 427 is 21.4% of (so to speak :^)

427 / ((100-21.4)/100) = ~543.27 (HP)

Just to check, what is 78.6% (i.e. 100-21.4%) of 543.27? ~427
>From the 518HP (i.e. 21.4% * 427) you get only ~407

At any rate, 427 HP at the rear wheels is pretty damn respectable no
matter how you slice it! I'd like to see the actual dyno sheet to see
how the power falls "under the curve" - somtimes peak numbers can be a
little misleading. BTW, where did you find the 21.4 loss figure? Seems
reasonable, though I hear most tuners just using a 20% figure for a
rough estimate.

Seeya -

DT

> Date: Mon, 12 Oct 1998 23:18:14 -0400
> From: "Aline and Robert Sverdrup-Yap" <sverdrupyap@domain.elided>
> Subject: <Misc>:Forced Induction
> 
> Reynaldo wrote:
> <snip>
> >Anyways, to the good stuff, Michael at Active told me that they had some =
> >dyno sheets of their 325i Stage 1 and 2,  and their M3 Stages 1,2,2+, =
> >and 3!!!!!
> >
> >Saw their dyno sheets and those were pretty high numbers...
> >
> >For example: M3 Stage 3, 427 hp and 496 tq at wheels X 21.4% due to =
> >parasitic loss
> >from the drive-line components, let's see:
> >
> >that would equal to: 518 HP and 602 TQ peak!!!!! God lee.. At store TEMP =
> >*above 95 degree* imagine some of you who doesn't live in Miami's =
> >hotness... maybe more power...
> <snip>
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