I have a 2008 Honda Accord SOHC i-VTEC V6 with 78,000 miles. Upon acceleration (both in third gear and Drive), the engine hesitates ever so slightly. It's not smooth like when I first purchased it. While driving on the highway with cruise control activated, the car runs a bit smoother. I wonder if it needs a simple tune-up? It hasn't had one. Or, is it the variable control that regulates fuel economy (ECO) out of sync?