Hi guys,
Im looking to get my mini setup with a better map.
To make sure everything was lined up etc, i set a base map to 20 degrees constant across all loads and RPMs.
However, when i wrote this map to the megajolt, fired up the car and set the timing stobe, i saw the timing changing???????????
More worryingly, it seemed to be retarding as revs increased?
I didnt think this would be physically possible.
Any ideas guys?
cheers
Nick
Timing changing on a flat fixed map of 20???
Moderators: JeffC, rdoherty, stieg, brentp
Hi Nick,
Try this to absolutely verify the controller has the new values:
1. write the new values.
2. Flash the values.
3. Power down, then power up the controller.
4. Re-read the controller values using the software.
Finally, you should verify the configuration software is reporting the actual ignition advance- that should correspond to what you measure with the timing light.
Please report back with your findings.
Try this to absolutely verify the controller has the new values:
1. write the new values.
2. Flash the values.
3. Power down, then power up the controller.
4. Re-read the controller values using the software.
Finally, you should verify the configuration software is reporting the actual ignition advance- that should correspond to what you measure with the timing light.
Please report back with your findings.
yep, have zeroed the map values by disconecting, then uploaded the MJ map to the laptop to confirm the new flat map was flashed to the MJ.
The actual ignition advance was not 20 degrees either, but i dont understand how it could retard as revs increased, let alone change when the map has nothing but constant values, in this case 20.
The actual ignition advance was not 20 degrees either, but i dont understand how it could retard as revs increased, let alone change when the map has nothing but constant values, in this case 20.
nky_84 wrote:yep, have zeroed the map values by disconecting, then uploaded the MJ map to the laptop to confirm the new flat map was flashed to the MJ.
The actual ignition advance was not 20 degrees either, but i dont understand how it could retard as revs increased, let alone change when the map has nothing but constant values, in this case 20.
On a fixed map, when engine speed increases, should i expect to see a retarding spark on the strobe?
