KTuner.com

If I have 2 cars TL and TLX. I have to buy 2 separate tuners (assuming you support the TLX) and is there a major difference in V1.2 vs V2 I see for sale.

If K tune my 13 Acura TL SHAWD before I do engine upgrade then do - Intake port runner mods - port spacer - J pipe , I can redo the tune after the mod? Some what unclear on the do's and dont's. Sorry I tried to glance thru the post however my work limits the time I have at home to do non work of late.