Supercharged holden commodore ecu and other fun topics

[Bruce Plecan]

If you look at the archives under 808, there is a **hac** and one of the
cals is for a Turbo Four 2 bar.
While not the best way, you can sub a 2 bar and disable the error flags and
just go for it
It is by far best to have a table that has more resolution then you can use,
running out of calibration *room* is the worst thing you can do in my book.
Howevery with that said, some folks have been rather effective at doing just
that.  Some of the Turbos buicks run a 9+ :1 AFR at WOT since they need the
fuel after they run out of resolution of the MAF.
So for a moment they are way to rich, but as they rev past that they are
correct again
Bruce


> Hey Daniel,
>
> I'm just a little confused... What do you mean when you said that you
> remapped one of these using the 808? I'm not exactly sure what you mean.
> How did you configure a supercharged car with a 1 bar map sensor? I
> thought it doesn't matter how you treat the internal maps in a
> program... the ECM doesn't know what the hell is going on in the boost
> stages of the car (thus why we use 2 bar map sensors). Did you alter the
> manifold vac so that it had a reduction factor or something? hmm.. I'm
> rather confused.
>
> Isn't this bodgy? I've heard of a company in Oz who were using 1 Bar map
> sensors on supercharging applications... Its was rather funny (or should
> I say ashame???), because they just sorta set VE tables to 100% near
> atmos MAP, and of course as the supercharger started to spin up, it just
> got leaner... and BOOOM.. no more engine!
>
> Also, just to note, turbos aren't really much different from
> superchargers as far as computer applications are concerned... IMHO. I
> find that the positive displacement superchargers just tend to boot in
> very quickly, so many cars need significant mods to acceleration fuel,
> but apart from that... the mapping principal is relatively the same.
>
> Ah well, just my two cents worth. Hope everythings going well for the
> rest of you guys!
> Just for interest sakes, I'll be doing a lot of work on the 808/165
> computers & code!
>
> Cheers,
> Andrew Wakeling
> zakariski at optushome.com.au

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