09 Chevy truck with E38...ASPARK?

[67SS509]

Tuned on a 09 Chevy truck with the E38 ECM today. My ASPARK PID does not work on these like the 07 and down PCM's. How do you log these to find how much timing is coming from the low octane table?

[Taz]

Hello 67SS509,

On the E38 I believe the PID you are looking for is E38.OCTSCL_DMA. This PID is the opposite of the LS1 ASPARK PID - when it is at 0% the ECM is using the High Octane spark table, when at 100% the ECM is using the Low Octane spark table - and percentage between these values is the weight applied to the respective spark table.

Just getting acquainted with the E38 myself ...


Regards,
Taz

[67SS509]

Can't find that PID in my list. Think I have another problem going on since I updated. Gonna start a new thread on that.