I need some advise...I'm taking my 2013 4dr Jeep JK Unlimited Sport with 35"Nittos 3" ReadyLift suspension Rough Country nitro shocks to a reliable shop and Jeep mechanic for a gear install (currently running 3:21's) going with Yukon 4:88's and Detroit True Tracs front and rear, got a great package deal from 4ws.com. Anyway my question is do they need to install the SuperChips FlashCal immediately after the gear install prior to a test drive to prevent my Jeep from going into "Limp Mode"??? Or can they do a test drive and install the FlashCal as soon as possible. Anyone?