6 pin works well. I am selling my one if anyone interested as I am now buying the is250.
Have a look, text anytime
http://www.ebay.co.uk/itm/Lexus-IS220-TDI-Tuning-Chip-/251206219657?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D4501095131150933059%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D251206219657%26