Hello AquaTune, I’m sending in my Registration card as requested and just want to let you know that after installing the AquaTunePlus kit on my ’01 Toyota Sequoia – 4.7L, I am pleased to say that your service has been excellent. I have been enjoying the hp so much that I haven’t really, truly checked my actual increase in my mpg’s. I will send you that info as soon as I settle down enough. I bought this system after a recommendation from a friend who has a friend in Germany that bought and just loves it. I agree, I feel I’m getting my money’s worth and am recommending it to others.