I purchased this product thinking it would be a simple and easy way to increase the mileage and efficiency of my 2012 f150 3.7l v6. I read a lot of reviews and found that the insulation is very specific. I contacted the seller and asked about specific insulation designs for my particular vehicle. To my surprise, I received a reply within 24 hours, I was given instructions and installed it as directed. Well, while I think the programmer gave me a slight performance boost, I didn't get anything from the programmer in terms of mileage and efficiency. And might lose part of the run. I knew this product would be risky so I'm not too upset about the loss. But I can't say that this isn't the right tool for my application.