msw109,
sorry late reply.
yes i reccomend mine or any of the others. they all do the same thing...increase fuel rail pressures to the glow plugs for EITHER increased performance OR better fuel efficiency. these 2 features seemingly oppose one another. not really.
if you drive with a light foot, then with the increased pressures, fuel is burned more efficiently and better mpg's.
if on the other hand you drive with a heavy foot (because you want to/have to ie, passing, mountains, etc), well, the increased fuel pressures are a no brainier to figure out.
i have a 2013 model. im still under warranty for 1 more year. if i bring it in for anything, i can unplug this device in 5 minutes and wouldnt feel the slightest bit guilty over it becasue its not harming the engine in the slightest.