PI closed loop algorithm for 1227747 ECU?

[Bruce Plecan]

Now with convential exhuast stuff you generally get to lean misfiring, with
the life long SS the tubing is usually heavier and holds more heat in, and
that will cause more afterburning,  meaning any residual unburnt gas "after
burns" and pops in the pipe.
*Generally* adding timing helps either situation, then fuel will depend on
what you got going one as far as too much or not enough fuel.

Often I'll have a far amount of timing at over run at higher rpm, and the
depending on application take a ton of timing out under 2K rpm.  Too little
timing at high rpm overrun can all but blow the whole exhuast off, it's that
explosive.
Grumpy



> The exhaust / muffler is another issue that has added to my problem.  I
> have a completely stainless steel exhaust system and stainless systems, at
> least in the Triumph world, are known for inducing popping/backfire
> problems.  But hey, they don't rust . .
> _s
> At 12:10 PM 7/6/00 -0400, you wrote:
> >Often adding some timing during over run stops that, but the vehicle is
> >slower to declerate, when coasting down.  Mufflers, and well the whole
> >exhuast system have a huge effect on the popping.
> >   Might try playing with the DFCO parameters.  If ya get too rich can
cause
> >stalling
> >Grumpy
> > > This is interesting as this exact thing is happening to me, popping on
> >decel, and the others.


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