kind of new to the tuning world. last time I actually did this stuff was back in college. any who I got a 2008 gmc sierra 2500hd with the 6l90. I have exhaust (still has cats) for now and intake. I am also running bigger tires 305/55r20 now before I even put the bigger tires on it the truck was doggy especially compared to my 04 2500. now I started writing my tune and I just want to see if im heading in the right direction so far and if there's anything ive missed to wake her up alittle. thanks guys ill post a log later but for now I have the tune file.