I love mine. I have a 2.0L/auto 4x4 4 door and in mixed driving I get 24 in the winter and 26 in the summer. I'll be buying another one if/when this one takes a crap because it does everything I want it to and affordably.
The biggest issue with the 2.5/2.7/2.0 is the cam drive system. They are very picky and prone to fail in high mile engines.... like 50k miles, not 150k. Engines are getting harder to find and most are over a grand. When the chain or tensioner fails on these the pistons get very cozy with the valves. Instant destroyed engine.