In the market to get an sctx3. I found a good deal on one. It is a locked 3015 unit and I know I have to have it unlocked and setup for my truck. But is there anything I have to do. I keep hearing about what 'Strategy" my truck has. I also see that there is alot of vendors on here who should I go with and what tunes do I need. My truck is a stock truck with a 4" str8 pipe and a S&B air system. I tow 8k once a month. Any input will be greatly appreciated.