Originally Posted by
aaronc7
LS1 PCM has a hard limit of 512 g/s in the MAF or ~67 lb/min or ~ 670HP regardless of what size MAF you use. There's a hack to scale a bunch of tables as a workaround...but many at this point simply go SD to avoid it and avoid any airflow restriction the stock MAF poses etc.
I ran COS3 using the stock MAF/VE blend so MAF should be fine in COS5 too if you wanted to go that route. You can still use the COS features such as igniting timing retard in boost, etc.
How much power are you expecting?