i disagree with your statement completely. the car was tuned with basically stock airflow setup that flowed in the 400 cfm range. adding a setup that flows 770 cfm leaned the car drastically. the difference in boost of 1 lb isnt going to lean my 32 out the way the tune did. retuning the car added fuel to the mix and now my afr's are in a very acceptable range actually almost perfect range for a forced induction car. im datalogging 10 different engine functions and the difference in the 2 tunes are night and day. the lean issue didnt have anything to do with the abilities of the c3 until better and different mods were added to the mix.
lesson to be learned is that if your modding datalogg, if you add componets to a setup that changes anything within the ecu parameters retune. just my .02