All my tuning files are supplied by viezu technologies that's who I am in partnership with or a client dealer if you prefer that. All there maps produce up to 35% more power and torque depending on vehicles age and how much it has been modified sometimes more different vehicles can produce different results. I read your ecu with your standard file I then send that file away to viezu technologies where there team of highly skilled file writers then modify your standard map by making changes to it within the safe limits they make the changes to what the customer has asked for. It's a custom map tailored for your vehicle so if it's a standard car with just a cat back system, air filter or even a de cat I can have them write a lambada delete software for your vehicle. Changes are made within the map so you are getting the best results out of your modifications. Or if it's highly tuned vehicle with a different turbo and injectors these can all be changed to. You can get some real sharks out there who can offer you a mobile remap who don't modify your map sometimes it can be a guy with a lap top loading a cheap ebay file up into your vehicle where the only changes that have been made is more fuel. I am not one of those guys I have fully underwritten insurance and all my remaps are tailored for customers needs. This is why I offer a 7 day money back guarantee if the customer is not satisfied with there vehicle within the 7 days I can take the map off and put vehicle back to standard and give them there money back.