[s-cars] Re: Living at altitude - Apexi and turbos

[Kirby Smith]

I would support modifying the Motronic so that it did WG top contol like
the A'pexi, and optional limited first gear boost to save the tranny (we
could use the speed limiter dongle).  Please note, however, that just
because the Motronic is no longer controlling boost, it is still
controlling spark advance, and is quite capable of retarding the spark
to kill detonation.  The A'pexi can't provide boost that the engine
won't generate.

kirby

QSHIPQ at aol.com wrote:
>
> Hap:
> My wishfull keyboard.  318rwhp, I believe that was Mance's car IMS.  I'm
> tracking these pretty closely stateside.
>
> I'm very intrigued by boost controllers, their function and "claimed gains".
> I'm pretty convinced that boost controllers may overcome some of the
> shortcomings of the motronic, but I'm most puzzled why one wouldn't throw the
> 500USD to make the motronic 'better' (it can't anyway).  The shortcomings of
> AMBC are pretty well known, and if you are indeed "playing on the edge" as
> you claim, then a boost controller is a more dangerous tool than helpful. If
> you have rpm input and boost input as your two, then I don't understand the
> step backwards.  The Motronic (CAT, boost, rpm, knock, water temp, timing)
> is a smarter tool.  Sharpen it, don't use an ax to do scalpel work.  Right
> now, one tank of bad gas could = boom.  How does the apexi know?
>
> Big dog stuff needs quantification.  I've enjoyed reading big turbos, big
> IC's and boost controllers.  But right now, I've plunked down the weenie
> baseline is 400 in full RS2 battle fatigues, no IC, no boost controller.  If
> the RS2 MAF limits you to 430, then all the other numbers (IC above ambient
> etc) seem restricted in terms of dollars spent/hp ($:HP ratio).
>
> Hap, I only encourage you to move this discussion onto a dyno.  I also
> believe 500 is possible, but I'm convinced that will come at the expense of
> driveability, unless displacement is added to the equation (yo Mike!).
>
> I enjoy the reads tho
>
> SJ
>
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