The OFT may come pre-loaded with the right maps or you may have to download them on a PC then upload them to the OFT before flashing your car depending on which stock tune you have.
If you are feeling up to tinkering with the relevant maps there is some modified AVCS table to suit the JDL UEL catless header in the below thread. Ignore the thread title and read through it.
http://www.ft86club.com/forums/newre...reply&t=115119