ECU does add timing...discuss
Jan 15, 2008, 11:09 AM
#33
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Comparing to a Subaru, would that mean there is a value in our ECU similar to the Subies Ignition Advance Multiplier (IAM)? Something has to tell the ECU to access the tables.
SQ
SQ
Jan 16, 2008, 02:49 PM
#38
I have this map on my 94170015 '03 model rom, but EcuFlash has it listed as "Boost Enhancement Advance/Retard (anti-lag)" map. There are 2 in total, map 1 has all 0's in the columns, and map 2 has a slight advance section between the 30-80% load columns from 1500-4000 rpm's. As I've been having a "mystery" knock around the 3000 rpm range, maybe I'll play with this table when it's nicer and see what it affects.
Jan 16, 2008, 09:26 PM
#40
Evolving Member
I can confirm that adjusting this map DOES have an effect on the cells modified when there is no knock.
Im going to try higher load cells of the low det timing advance map with my 91oct map ,but put 93oct in the tank and see if it will advance with the lack of knock. I will post the results if it works as expected.
Im going to try higher load cells of the low det timing advance map with my 91oct map ,but put 93oct in the tank and see if it will advance with the lack of knock. I will post the results if it works as expected.
Last edited by monsta; Jan 16, 2008 at 09:31 PM.
Jan 17, 2008, 04:26 AM
#41
When peopl rescale their timing maps affecting the 40% range they often forget to adjust the BE tables which use the sma load axis
Last edited by C6C6CH3vo; Jan 17, 2008 at 04:30 AM.
Jan 17, 2008, 06:08 AM
#42
At 40% the EGR is operating diluting the mix, this slows the burn with CO2 and the ecu possibly advances by the "BE" advance table. MAF will see a drop in airflow and so less fuel is used.
When peopl rescale their timing maps affecting the 40% range they often forget to adjust the BE tables which use the sma load axis
When peopl rescale their timing maps affecting the 40% range they often forget to adjust the BE tables which use the sma load axis
Jan 17, 2008, 04:34 PM
#43
At 40% the EGR is operating diluting the mix, this slows the burn with CO2 and the ecu possibly advances by the "BE" advance table. MAF will see a drop in airflow and so less fuel is used.
When peopl rescale their timing maps affecting the 40% range they often forget to adjust the BE tables which use the sma load axis
When peopl rescale their timing maps affecting the 40% range they often forget to adjust the BE tables which use the sma load axis
Jan 17, 2008, 05:38 PM
#44
Interesting stuff. I had been thinking that we might be able to use this in some way akin to the Subaru Timing Multiplier (well really addition algothrim) and let the car run max timing it will take at all times and alter the the timing pulled with knock (more even if desired). All depends on how it develops overall I guess. If I can manage to find the tables the old fashioned way then I will start experimenting. I had known the Cobb had these defined but I wasnt going to mention it since I wasnt sure if they use them for a similar purpose or not.