Dyno results. CIS-E vs. programmable engine management.

[vwnuts at yahoo.com (Anthony Pelletier)]

I see your point.  I also though the factory was
rather conservative.

--- Bradley Peet <btpeet@effervescent.com> wrote:
> I think because I am running less compression than
> stock, the motor will
> tolerate more advance.  The rule of thumb with
> ignition timing (at high RPM)
> is to advance it until one of two things happens: 
> A) the engine starts to
> ping, or B) the engine ceases to make more power;
> then back it off a notch.
> It's possible if I went to 38 degrees total advance,
> I wouldn't get any more
> power but I am unable to explore that possibility
> unless I reposition my
> crank trigger.
> 
> The SDS web site tech page (sdsefi.com) suggested
> most engines like
> somewhere between 30 and 40 degrees of total
> advance.  I'm not sure why the
> factory doesn't run more advance but I'd have to
> assume they error on the
> side of safety and emissions rather than going for
> that last 5 horsepower.
> ;)
> 
> Bradley
> 1988 S16V 2.0 EFI
> 2002 S4 Avant
> http://s16v.com
> 
> > -----Original Message-----
> > From: Anthony Pelletier [mailto:vwnuts@yahoo.com]
> > Sent: Monday, August 11, 2003 7:33 AM
> > To: Bradley Peet
> > Cc: scirocco-l@scirocco.org
> > Subject: RE: Dyno results. CIS-E vs. programmable
> engine management.
> >
> >
> > One question for you.  Why so much advance? 
> Wouldn't
> > 36 be sufficient?  Just curious....  Doesn't the
> > factory 2.0 motroinic stuff run 32 (or is it 26 I
> > don't remember) degrees timing total?  Just
> curious.
> > At zero vacuum I run 32 degrees total on my 9:1
> turbo
> > motor.
> >
> > Anyone have any ideas.  What do you run for total
> > timing?  I was looking at my friends 1.8t through
> > VAG-Com and they seem to run a max of about 30
> degrees
> > under vaccum.
> 
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