Edelbrock 3670 User Manual - page 213

Features Available with Pro option only

213

The "Learn Disabled" button allows for user override of the adaptation behavior. There

may be cases where you have a calibration that is tuned for a very specific purpose and

you don't want the ECU VE adaptation changing this. In that case you can turn the

adaptation off by using the Learn Enable/Disable Button. MAF total display equals

MAF1 if only one sensor is used; and the total of MAF1 + MAF2 if two sensors are used.

You can adjust the speed or rate at which adaptation occurs to the VE Map by increasing

the values in the VE Adapt Gain table (available in the maps drop down list on the MAPS

tab). The index or ordinates in this table is the VE error, and the number you calibrate in

the cells is the amount of error that is adapted out every 5 mS. As you can imagine, even

very small numbers will adapt rather quickly at this rate. The VE Adapt Gain Table

should either be left in the default condition, or calibrated so that there are zeroes (no

adaptation) in the center cells of the table and an increasing number at each end of the

table. The reason for putting zeroes in the center cells is that with very low error, no

adaptation is needed. Also, there will naturally be some slight error variation during

adapted operation where it is unnecessary to attempt to adapt further. When entering

values in the other cells: TAKE GREAT CARE - DO NOT PUT TOO LARGE OF VALUE IN

THIS TABLE! A large value can cause erratic adaptation and poor running because it can

adapt a false value captured during a misfire, IAC modulation, or other nearly instant or

non-typical running condition. Generally, the slower the adaptation - the better; because

it will adapt based on a larger sample size and give the ecu a more complete picture of

true airflow.

If you are only running MAF during tuning, 

be sure to deselect the sensor in the

setup wizard after the adaptive learn has been completed to return to normal

speed/density operation and prevent sensor faults from being displayed when

MAF is unplugged.

 It is recommended that you then open the VE map and manually

smooth any surfaces that were not fully adapted. Such as in the corners of the map

where it may be difficult to run.