west coast

Hi all, I have been doing some research on ECU tuning for the A35, my question is for those who have done this on their cars and any tuners who may be on this site, did you also tune the Central Powertrain Computer or CPC. According to what I have read the CPCs job is to restrict HP, Torque, Exhaust valve, and Boost, if your ECU tune exceeds the values set by the factory in the CPC it will restrict these parameters and possibly put the engine into limp mode! What has your experience been with the tunes you have done?
Thanks