It is possible BUT it is also going to get your friend FIRED in less
time than it takes for the software to update. The COMPANY owns the bus
NOT your friend. If he has such a problem thinking that 3 mph is going
to help him then maybe he should not be driving a bus.

Oh and IF you make one wrong adjustment you can also cause major damage
and then YOU get to pay the bill since you altered the program.

You may also want to tell him that on just about any heavy truck/bus
built with computer controls the service center and the owners can pull
up a LOT of information about how he drives and what he is doing with
the vehicle as well. MPH, rpms, gear and brake use, idle time, are just
a few items they can look at easily.

Yes.  You can change all KINDS of stuff from the programming interface,
which is really just a serial port sending ASCII commands.  You can really
screw things up totally if you aren't careful.
--scott

Hell yes it is true. It's cheap and easy too, just like your sister! (
sorry, couldn't pass it up...LOL). Go for it! Why should you care if
your "friend" causes thousands of dollars in damages, gets speeding
tickets, or risks the lives of 40+ poeple. sh.t, we have too many
people already.

Aren't buses on a schedule? Does he need a longer piss break? Even if
he gets paid by the mile, the trips are only so long anyway. If he gets
paid by the hour, I'd think he would want to go slower.

If you can give us good logic as to WHY this needs to be done. I'll
tell you how.

It should be obvious that it is true - but you were not really asking
that question now were you.  Unless it is his bus you might want to
consider seriously whether you want to be a partner in tampering with
what many juries might consider to be a fundamental safety feature.