I do my remap with my own laptop, just need a mpps cable & software, download my ecu file and email it to ecu remapping specialist in UK, paid around GBP 20 or more depend on what mod has been done, such as install downpipe, bigger intercooler, bigger turbo,etc. The remap file receive within 24hrs, I write the remap file to my ecu and that's it. I still can re-write back to my original ecu file. The remap does not do any harm as its operating within the limit.