Had the same problem this morning. Truck was running fine I stopped for a traffic light. When I went to accelerate the truck would not go faster than 25 mph. Check engine light came on. I let the truck idle for 2-3 minutes and problem went away. I checked the trouble codes and p0106 manifold absolute pressure and p0700 transmission condition codes appeared. I have a S&B filter, 4" turbo exhaust and preditor with the 40hp program inatalled. Maybe these two problems are related. The wix fuel filter has about 3000 miles on it. Any help will be appreciated.