2010 Honda Accord Q&A

2010 Honda Accord Question: ECM programming

The 2011 Accords are advertising 34 MPG hiway. My 2010 with the same engine/power train is said to get 31 MPG hiway. Was this jump in hiway mileage improvement gained with only ECM programming?? Can I get the improved programming installed in my 2010 with out any adverse problems? -
Answer 1
only your factory Honda dealer can answer that question. if anyone else attempts this, it will likely void your warranty. -