Just like the previous model PCIII USB this new & improved unit not
only allows you to change the fuel mapping to obtain
better Air/Fuel ratios & yield better combustion in
the cylinders. It also has a nifty optional Autotune
module that will do the mapping for you based on the
custom target Air/Fuel ratios you select! Just like the
PCIII USB this unit is way more important than any choice
of exhaust brand for getting the best possible throttle
response & power delivery out of your fuel injected
So here's how
it went down. At the time I did this test the new PCV
Powercommanders had not been made for the 2004-2007
100RR's only 2008+ which used a different harness. They
are now currently available for all models.
harness for the 09 600RR PCV did fit the 04-07 1000RR
with 100% Plug-N-Play connection
I added the Autotune and it works!
I was having some sort of hard starting problem which I
thought may have been a result of the bike trying to run
overly rich at low rpms during the start up cycle. Second
thought was it might also be something to do with the HRC
ECU I am using instead of the OEM one, but did a little
research on the forums and found others with the same
hard starting problem.
Updated the firmware in the PCV and the bike instantly
started 3 times in a row with zero of the previous
symptoms. Never had another problem out of it
Specifically tested the map switch function to see if the
Autotune updates the trim tables & it works very
Just had to label the switch because I kept forgetting
which way is which...
Spent the weekend at the
race track & have great news!
First let me give you a little background on my 2004
I originally ran an HRC ECU with a PCIII piggy backed on
it that I mapped out and was very happy with the results.
Later I took the exorbitant amount of time to map the HRC
ECU itself, but left the PCIII attached with zero values
in it just in case I ever needed to make some quick
adjustments. The overall power results were marginally
better with the HRC ECU mapped rather than the PCIII, but
the throttle response suffered in certain areas
especially at low throttle trying to get back on the gas
etc so I used the PCIII to iron out some of those problem
To get apples to apples comparison on this new PCV &
Autotune I had to go back & put the default map back
into the HRC ECU so that the PCV would now have to do all
the work I had originally done with the PCIII on the
The end result is that in about 4 sessions on the track
the Autotune managed to do what took me hours to do on
the dyno. The cell numbers in the maps were almost
identical down to 1 value off the original map I created
with the PCIII.
I had one problem where I think the engine temp dropped
too low after entering the track with a hot engine
(normal operating temp) and the air flow cooled the bike
too quickly down to like 148 degree range and I came in
too early which caused the A/F sensor to pick up some
over rich conditions & tell the trim values to
majorly lean out the top end range of the bike. The
safeguards in the software force the user to review the
trim values before they are accepted (written) to the map
in the PCV and of course when I saw those unusually lean
values I cleared the trim instead of accepting it.
Basically as its been said before you do need to have
some understanding of the process & tuning procedures
or you could damage your engine, but all in all I am very
impressed with the capabilities of this unit as well as
the ease of use. Additionally there are safeguards in
place that conditionally limit the AutoTune to function
under X amount of time or minimum engine temp etc, but
being in a hurry to get this test done and the unit
functioning I disregarded all of those and went with a
manual 2 position switch method of telling the AutoTune
when to function or not. This also allows me to very
strictly control the time and engine temp etc that the
unit is populating the trim tables so that it is only
tuning the bike at the specific operating environment
that I need it to be. This helps reduce the time it takes
to fine tune the cells.
One more thing to note: If
you use an AutoTune module to tune your bike then just
use it for the tuning process and once the map is
completely done remove it from your bike. There is no
reason to run the AutoTune in real time all the time.
That just uses up more electrical current to heat the
sensor and over time as your sensor degrades, especially
if you are using leaded race fuel, so will your map.