Re: 80Q/NG Advancing the timing

[Nathan Belo <belo@eskimo.com>]

When I had the engine rebuilt, my WOT (wide open throttle) switch wasn't
working.  My mechanic said he fixed it and modified it to come on at 2,500
rpm.  The car has a lot of torque now, but I'm not sure if it's from the
rebuild or also from the modified WOT.  Anyone know if this is for real.
My mechanic won't tell me what he exactly did to the switch, because he
says it's illegal to tamper with EPA b.s. 

On Mon, 16 Nov 1998, Tony Lum wrote:

> At 03:05 PM 11/16/98 -0600, you wrote:
> >
> >Brian,
> >
> >>Can someone give me information on advancing the timing on a 1988 80
> >>Quattro?  I have my Coupe GT JT motor advanced about 12 deg and like the
> >>end power.  Does the NG motor behave in the same manner?  I just want to
> >>know if I advance it 10-12 degrees with my adjustable timing light,
> >>without screwing with the computer, or the duty cycle.
> >
> >
> >Unlike the KX/JT motor of the CGT/4Kq, the NG uses an ignition control
> >unit that advances or retards the engine timing based on a knock
> >sensor.  So, you cannot advance the timing on your 80 like you can
> >on your Coupe.  On the plus side, the ignition system should automatically
> >advance the timing for you.  If you can hear the engine pinging when
> >you first accelerate from a stop, and then it goes away, your ignition
> >control system may be retarding the timing (and causing you to lose
> >power).  In such a case, you might want to try running a few tanks
> >of higher octane gas to see if you recover that power.
> >
> >Later,
> >Eric
> >'85 CGT, '82 urq
> >---
> >Eric J. Fluhr                                Email:  ejfluhr@austin.ibm.com
> >630FP Logic/Circuit Design                   Phone:  (512) 838-7589
> >IBM Server Group                             Austin, TX
> 
> Eric and Brian,
> 
> Ned Ritchie has a $249 chip for NG engines that advances the timing.  He
> claims about 10% increase in power.  I've had the ignition ecu apart and
> there IS a eprom in there (one of my dream projects is to hack the code on
> this chip and the fuel computer's as well to go with a light pressure turbo
> I'd install in my CGT when I got tired of the 130 horses.)
> 
> Regards,
> 
> -Tony
> _______________________________________________________________________
> 
> Tony Lum                                  1987 5000CS Turbo Quattro
> Berkeley, California, U.S.A.                1985 4000CS Quattro
> Audi Owner/Driver/Mechanic by Necessity ;^)   1980 5000S Sedan
>                                                1987.5 Coupe GT
> _______________________________________________________________________
> 
> 

Nathan Belo
'88 90Q 183K+ on recent rebuild.  Too many upgrades to list.