Pretty much decided on getting a XRT tune for the H6 which also addresses the wonky 5EAT. I was curious as to the best place to buy the Tactrix dongle. Direct they are $169 + adapter. I see them for considerably less and I assume they are knock offs. Any advice on where to buy? It would be great if someone who has had a XRT tune could give a short synopsis of the procedure and the amount of time it takes. He is having a special this month if anybody is on the fence. $375 including trans tune. Also, what plugs? Denso Irridium? Platinum? OE Subaru? Are NGK Laser Irridium worth the price bump? I use NGK in Porsche apps but this is my first Subaru.