I also have had mine for about 8 months with no problem. For daily driving it does great. It sure makes driving in drive mode a lot better. It's almost too jumpy in sport mode. Unfortunately it just doesn't do any help with full throttle runs.
I'm impressed, usually the mention of an item like this produces extermely negative posts.
You might want to search "pedalmax mustang" and get an ear full.
Great device....Been using it for 2 moths and totally satisfied.. What every one needs to remember it is NOT a power adder, it just gives you quicker throttle response and puts the power down sooner...
I daily drive mine on Sport 3 and have never looked back...