This seller sent me the unit the same day and I am very happy with it. It's been a month and I have to say I'm in love with this tuner. A few things you need to know when buying B4. If you have a stock F150 you won't notice much of a difference other than the speed limiter is set at around 120mph and unless you change the timing by around 2-3 degrees you won't notice any difference at all. Also remember that if you want to add more mods or CAI and exhaust know that this tuner has AFE CAI. This means you can pair this device with an AFE, which I did and am very happy with its performance and sound. Also note that you'll need to go into your race tune's custom settings to tweak a few things to get what you're looking for from this device. If you just hooked up this tuner to your truck and loaded a racing tune into the ECU, you will be very dissatisfied with this tuner. So if you use everything standard, you can only adjust the time and level of the transition to moderate or extreme! This improves the shifting of the truck and makes a difference when driving. Also, for those of you who claimed it only lasted a year, you may have had to cover the tuner with something and keep it out of the sun every day. This is an electronic device, ladies and gentlemen. Electronics don't work that well in the sun, so I did! Just cut a small rectangular square out of some old sunscreen I had and place it behind to protect from the sun. Hope this helps and we will update this review in 6 months!
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