I'm new to the site! I've had an 04 pilot for 4 yrs and while I love it and it's been the most reliable vehicle I've ever owned it gets bad mpg. I've read through a lot of threads about mpg and people talking about doing this or that I see no one has mentioned that the rear 3 cylinders come down and loop like a J into the main pipe! This is a terrible design and a major restriction! It seems every aftermarket pipe is like this also. I think if it came down into a Y pipe it would help with this mpg issue.