BoostedLS1
March 15th, 2008, 06:04 PM
Hi everyone I am new to this site and I have been reading alot about tuning etc and have learnt much already from what I have read here. I am very new to all this and my question to everyone is this:
Exactly what parameters govern commanded AFR? From what I have read here, I can gather B3647 (I am using custom operating 3) B3618 (PE modifier based on RPM), B3617 and B3641 (IT and coolant temp) do most of the AFR commanding. Are there any other minor tables/parameters which can also govern the commanded AFR?
I am logging and have noticed commanded AFR goes slightly richer than what the above tables command under high boost. It only occurs when I run 14psi or above, not anything under.
So I am wondering what other tables contribute to richening up commanded AFR? I read somewhere that cat protection can do it, however I have this disabled.
Any help would be great in assisting me find what table is richening the tune under the above stated conditions :)
Exactly what parameters govern commanded AFR? From what I have read here, I can gather B3647 (I am using custom operating 3) B3618 (PE modifier based on RPM), B3617 and B3641 (IT and coolant temp) do most of the AFR commanding. Are there any other minor tables/parameters which can also govern the commanded AFR?
I am logging and have noticed commanded AFR goes slightly richer than what the above tables command under high boost. It only occurs when I run 14psi or above, not anything under.
So I am wondering what other tables contribute to richening up commanded AFR? I read somewhere that cat protection can do it, however I have this disabled.
Any help would be great in assisting me find what table is richening the tune under the above stated conditions :)