Bad oxygen sensor ?

[Bruce Plecan]

"IF"  it was my car, I'd think about a switch, for selecting on or bypassed
then.  On for the ocassional tank of bad gas, bypassed for racing.  With the
disclaimer of properly tuned.
Bruce



> Hmm...   maybe I should connect the knock sensor back up too. Right now I
> have it bypased with a 3.9k resistor. (my old engine had a bad wrist pin
and
> it was knocking like crazy effectively killing WOT performance).

> From: "Len Sabatine" sabatine at epix.net
> >    Monitor Fuel Pressure , Read Spark Plug Coloration.  MPH Trap speed
is
> > indicative
> >    of HP [ Consistent with prevailing weather / track conditions.
> > Dependance on O2 sensor
> >    readings are  risky and unreliable as a tuning  tool. [ Hear an Echo
> ? ].
> >    Inlet - Exhaust tract leaks , FP volume / delivery and restrictive
fuel
> > filters are major
> >    concerns. Defective chassis - engine block grounds can be an
additional
> > headache.
> >    Len
> >
> > >So what do you tune by if not the o2 sensor ? SOTP ? 1/4 mile times ?
MPH
> at
> > >the end of the quarter ?


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