razza

Hi all, First time posting on these forums. Apologies if this has been covered previously but I did do a search but couldn't find any info. I am looking to upgrade to a G4X from a Vipec VX ECU. My question is - can I do this upgrade without a re-tune of the car? I assume I wouldn't be able to upload the same .pcl file but is there a straighforward way to copy the data across between platforms without the need for a re-tune. Thanks in advance for any help offered. Ryan