[M0nk3y]

I've tried my best to research but just to avoid inaccurate info I'm posting this topic.

Currently, I have a EcuTek tune from "X Company" (there is no need to mention the company. The tune is fantastic and I've ran it successfully for the past 3 years).

I have a PTuning FF Kit I'm about to install, and as such switching my tune to a FF Tune from Zach @ CSG.

Question is: When it comes time to send my file to Zach, my current tune is obviously locked to "X Company" and cannot be edited from someone else, correct? Would I have to re-flash my ECU to a stock config file?

Reasons why I'm asking. I have multiple revisions of my current tune, however I don't have any stock file within those revisions. My car was initially tuned on a Dyno and further revisions done via email. It looks like my file is ZA1JF40C. Would this be the correct stock file to flash and then send off the CSG? Or could I just send my current config file and have Zach go from there?

Thanks for the rather dumb question.