I have an acura MDX 2005 ,it has 45 000 miles on it ,it is a nice car but suddenly this car has been stalling in the middle of the road and in the dealer they say that they don't find any problem ,does anybody knows about it ? and the problem is that sometime does when I'm on express way and the car start stopping or stalling

I also dont think that any problem is there. Do you find it difficult to drive?How is the performance of this car?

Acura RDX 2007 Acura Performance Chip (http://www.engineperformancechip.com/acura-performance-chip-c-868)