RomRaider

I think it might depend on what is meant by a 'reset.' I think learning might be preserved on some ECUs when trouble codes are cleared using an OBD-II scan tool.

Not on my ECU. A8DH200Z or on A8DH200Y - not sure whether this is a 32bit thing though. On the older 16 bit ecu's it does.

Most of the 32-bit ECUs do, some don't though.

I have a 05 STI running A2ZJB11J and after flashing I have to perform a reset. It remembers all the learning including the IAM.

Question for Merchgod or somebody who knows?

I want to know more about the timing compensations.....

1. When does the Alternate coolant compensation come into play. I think I read in a thread by Airboy that it was under 3800rpm. Is it also under a certain load?

2. When does "Timing Compensation A - Intake Temp" come into play

3. What relevance does the "Timing Compensation A - Intake Temp" Activation have. I assume this does nothing currently as my table is at -100. I also assume the furtherest most left column is "Load" and I enter the % I want timing to go up or down at certain RPMs. Or do I have it totally wrong?

4. What effect does the Activation table have on the "Timing Compensation A - Intake Temp", Does this mean it isn't working?

5. When does "Timing Compensation B - Intake Temp" come into play

And finally
6. When does "Timing Compensation (Coolant Temp) come into play

I have attached my factory 06 WRX Rom to show what tables I am talking about.

Thanks

Michael

Base Timing Alternate (Coolant Temp) comes into play when the target for this table is greater than the normal base timing target, as explained in the help text.


The factory values for your ROM for the activation table are -100% up to 0.40 load. This means there will be no Timing Comp A up to 0.40 load (and interpolated decrease between 0.40 and 0.60 load. At 0.60 and above, in your map, the timing comp a iat is not modified. That is, this activation table directly determines the portion of timing comp a iat that is applied based on load and rpm.


I explained this here:
http://forums.nasioc.com/forums/showpos ... stcount=36


IIRC, it is active all the time, but I'm not 100% positive on this.

Thanks for explaining the comp B table thing.