Review on Increase Fuel Efficiency, Save Gas, and Boost Horsepower with the Innovative Performance Chip/Power Programmer for Toyota Tundra 3.4L, 4.0L, 4.6L, 4.7L, and 5.7L by Ronny Prather

Although I have no complaints about the company or the delivery or even the product itself. I just want to tell you, don't expect too much. Installation was easy and the hardware under the hood looks great, the results are far from impressive. I didn't notice a big difference in consumption and performance. Cost isn't an issue, so give it a try if you'd like, but be prepared to be disappointed.