Manual

Method 3

Method 3 requires you to access the Fuel Set-up p age and adjust two fields: “Barometric

Lock” and “Barometric Pressure Lock at”.

- Barometric Lock should be set to enabled, this tells the F10 that you are

going to lock a p articular valu e in as the measure barometric p ressure.

- Barometric Pressure Lock at allows you to set a particular barometric

pressure value. This value should be the average barometric pressure in

which the engine will be operated.

Set the Barometric Pressure Lock at xxxx mBars, where xxxx is the pressure you require, for

example 1000mBars. This setting will force the F10 to assume that the environment always

operates at 1000mBars barometric pressure and will compensate the fuel for 1000mbar

regardless of the actual barometric pressure.

Note: that barometric pressure changes regularly and that Method 3 is only a

basic approach at barometric compensation.

Method 2

Note: M ethod 2 is used with engines that are using a M AP sensor to measure

load.

Method 2 uses a constant barometric pressure value which is measured by the M AP sensor

before the engine is started. As previously mentioned, the ECU switches the fuel pump on at

start up (fuel p ump p rime). If the en gin e is not started, the fuel p ump will be switched off. At

this time, if the throttle position exceeds 96%, the measured manifold p ressure is stored as

barometric pressure since the manifold pressure in an engine that is not running with the

throttle wide op en is the same as the atmosphere. If at start up the engine is cranked before

the fuel pump prime has finished the ECU cannot read the barometric pressure from the M AP

sensor as the engine will cr eate a vacuum in the intake manifo ld. In this case, the F10 will use

the pressure value as set in M ethod 3. If you have not adjusted it from factory settings, this

will be 1013 mBars.

To complete M ethod 2 follow these steps:

1. Set the Barometric Lock in the Fuel Set-up page to “disabled”.

2. Make sure the throttle position sensor is properly calibrated. It must exceed 96%

throttle for this to work. Also make sure that the MAP Sensor is set correctly in the

Main Set-up.

3. Switch the ignition off.

4. Apply full throttle.

5. Switch the ignition on but DO NOT crank the engine.

6. Wait till the fuel p ump prime finishes (about 5 seconds) then release the throttle.

The current barometric p ressure as read by the MAP Sensor will be p rogrammed