I have a 2007 crew cab TRX. I am trying to decide what the best programmer will be for pulling heavy loads. The loads will be between 5,000lbs to 10,000lbs. I understand that much weight is over the RECOMMENDED towing capacity . It is a strong truck , it has the 5.7 in it. I have pulled close to 7,500lbs, and it was just a Lil sluggish. Which is understandable . I'm just looking for a programmer that will give me better pulling power. Thanks.