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Professional EFI systems specializes in high performance car computer plug and play kits. They are direct plug-ins to the factory ECU and lets the customer have complete control over every tuning aspect of the car. We have applications for Porsche, Chevy, Nissan, Toyota, and many more. Visit us at www.proefi.com for more information. A complete application list can be found there as well as local dealers in your area. "This Engine Management System has given us the ability to do things that we could only dream of in the past. We will be taking our performance to a new level this season with the help of ProEFI." - Paul Major