Vss Northstar (Page 1/1) Holland Harry NOV 06, 06:30 AM Anyone no how to change vcc impuls in a 1227730 ecm? In Tuner pro ? jdv NOV 06, 08:15 PM It might help if you had code mask, bin and adx or xdf files for someone to look at. Ryan hess was the one that did the 7730 conversion that was based on the $a1 code.