High Altitude and smoke

[gregory O]

Ernie, here is where the newer computers make up for the faults in the fuel
delivery equatons of the mechanical systems.

you are dumping fuel into the cylinders but cant pack enough oxygen rich air in
to completely burn the fuel. the same volume of air at a lower altitude has a
much higher concentration of oxygen which would burn all the fuel. not sure if
the modern computers deal with the elevation factor or maybe they deal with the
opacity condition?

I get several calls a month (trucksmog.com) from Diesel pickup drivers who got
tickets for excessive smoke and need to be certified as factory year compliant.
Usualy kids with new trucks that re-chip or add a aftermarket chip that tells
the computer to 'dump 100% requested fuel when the driver hits the pedal,
without reguard to the ability to burn. Turbo must be spinning fast to pack the
air (turbo boost) to burn the fuel at any given time.

the problem with turbos is :the more fuel you burn, the faster they spin, so
they can burn more fuel. the progressive process leaves acceleration with a
dynamic called 'turbo lag' where the turbo is not at speed to pack enough air
yet.

Curt's suggestion is that which a computer would demand to the delivery of fuel.
Greg 94ptca

--- In WanderlodgeForum@yahoogroups.com, Curt Sprenger wrote:
>
> Lighter foot, save fuel...It's down hill from Williams to the Colorado
> River.
>
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, CA
>
>
>
> On Sat, Oct 24, 2009 at 7:37 AM, Ernie E wrote:
>
> >
> >
> > While traveling at spots over 5000 feet, I have noticed lots of black smoke
> > on start up or getting on freeway. Is this due to the fact there is no
> > oxygen and I can't breathe either?
> > Ernie- 83PT40
> > Williams, Az
> >
> >
> >
>