WBO2 and Linear O2 can do for you....
Wide Band O2 control is some technology which only
recently (in the last few years) that has been incorporated into the
Aftermarket Fuel Injection Systems. This is the wave of the future
and is the most accurate fuel control that we know of.
The sensors are usually 7-wire Oxygen sensing type sensors that have
a WIDE RANGE of operation unlike stand O2 sensors which are really "analog
switches" that indicate a perfect "cruise or emission" A/F ratio.
Wide Band Aftermarket systems allow YOU to program the A/F ratio that
you desire the motor to run at. The DFI or FAST ECM will run in CLOSED
LOOP and maintain this setting 100% after the engine temperature meets
your programed starting point.
The User can now see the exact A/F ratio of the motor during cold start
where most aftermarket ECM programmers have problems. Allowing
the key to stay on unit the internal heating element in the sensor warms
up (usually 10-15 seconds) before starting the car will then allow you
to see actual A/F as the motor is first started. Corrections can
then be made with a great deal of confidence to correct startup and
This is GREAT for racecars because you can program a "leaner" 14.7:1
to 15:1 A/F for cruising and then slowly increase the target A/F to
12.5:1 or 11:1 for power. This is especially important for turbo
and supercharged applications where slight errors in A/F can cost you
an engine or damage parts.
The A/F is constantly displayed and calculated along with the exact
correction at any given time. The user can see exactly how much
error there is in his base programming and correct it. Using the
FAST system DOS software, correcting the error in the program is as
easy as reaching over and hitting the "L" key on the keyboard.
The CComWP software will instantly correct the VE% (fuel table) to the
proper value that is required.
Tuning any motor now becomes very easy for you. You don't need
to have a technician program the system or use a $10,000 A/F meter like
the Horiba system to find out what the engine A/F is running at.
Another advantage is that the sensor is lead tolerant and can be used
with all of the methanol and racing fuels available without damaging
the sensor. Standard factory style O2 sensors will degrade extremely
quickly with the use of racing fuel. Sometimes they will only
last 2-3 runs at the racetrack or 20 minutes on the street.
On an average the WBO2 or Linear O2 option is $750-950 depending on
FAST or DFI.. While FAST has the cheapest of the options, they
are still the best and most accurate.
This option is a MUST HAVE for any turbo or supercharged car.
FAST (formally Felpro/SpeedPro) calls their system WBO2
which stands for Wide Band O2 while Linear O2 is sold thru Accel for
the Gen VII series ECM's.