Speaking from experience with California's infamous "smog" tests over the
past 25+ years it certainly will.  But over a long period, other items like
the Catalytic Converter will be adversely affected (amongst other things).
-- 
Jim Thompson
84 GL 1.9 "Gloria"
84 Westfalia 2.1 "Ole Putt"
73 K Ghia Coupe "Denise"
72 411 Station Wagon "Pug"
oldvolkshome@gmail.com
http://www.oldvolkshome.com
***********************************
On 5/23/07, Geza Polony <gezapolony@sbcglobal.net> wrote:
>
> I'm wondering if the timing itself could affect the smog test results.
>
> Food for thought. I'm going to go reset the advance and see how she runs.
>
> Any BTDC people out there care to chime in?
>
>
>
> On Wed, 23 May 2007 19:24:53 -0400, Mike Collum <collum@VERIZON.NET>
> wrote:
>
> >Apparently not "Everybody".  All three of my 1.9s are timed at 5� ATDC
> >and run fine.  If I were to advance the timing at all I "Might" go to 0
> >(TDC) but I wouldn't advance a 1.9 more than that.  Maybe that's just me.
> >
> >Mike
> >'84 GL 7 pass
> >'84 GL Westy
> >'85 GL Westy
> >
> >
> >
> >Geza Polony wrote:
> >> Yes but...doesn't everybody time them a bit before TDC anyway? I
> thought the
> >> ATDC specs were mostly for early EPA requirements. When I had mine at
> 5*
> >> atdc it didn't have any power.
> >>