turbo conversion passes smog check

[ed armstrong]

--- Huw Powell <audi at humanspeakers.com> wrote:
>  > Ed, congrats on the car passing.  I seriously
> think
>  > the jurry is still out on the CIS-III ign
> combined
>  > with turbos.
>
> I do know Marc S tried it (at my insistence?
> curiosity?) and it was all
> wrong on his MC running 034EFI.  I believe he
> currently is using the
> original MC computer to run the ignition only with
> better success.
>
> The E3 module probably just does things all wrong at
> some points on the
> curve(s) for a turbocharged engine.
>
> >>One other thing. I still notice the timing is
> >>bouncing
> >>around somewhat. I set it to 0 BTC and it stays
> >>there
> >>a while but then advances to 15 BTC (this is the
> >>reason it failed smog the first time I believe).
> >>Lately it has been doing less of this, maybe the
> >>ignition computer is learning ??
>
> I don't think that unit is capable of learning.  It
> does, however, run a
> lot more advanced off idle than you set it, for what
> I have observed -
> set it at, say, 15 DBTDC, and crack the throttle a
> tiny bit (ie, open
> the idle switch) and it jumps to something like 45
> degrees BTDC.
> probably just what the NF/NG wants, but maybe qwuite
> wrong for a turbo
> engine.  This is not, however, part of any rigorous
> series of
> observations, just something I saw once that
> surprised me.
>
> > You asked what you could do next?  New engine
> > management my friend, you will not regret it.
>
>  From what Marc tells me, the "next generation" of
> 034 will include a
> tweakable (?) ignition controller, and a driver for
> some inexpensive GM
> idle stabiliser valve.  Nice touches both of them, I
> think.
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/
>

Thanks Huw and Jim

Soundz like 034 may be the way to go. The CIS-3
ignition is really spooked with the turbo and
different compression I guess.  I'm stuck in the cheap
though and plan to upgrade the fueling using
megasquirt next (Already purchased the kit). Maybe
I'll try the original MC ignition computer after this
point (I knew I should have got more stuff from that
junkyard dog the engine came from !).



=====
-ed

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