About Us

At Peformance Systems Integration we have a simple goal..... Provide complete, quality components and kits for the LT1 Conversion. These include stand alone wiring harnesses, harness extensions, pigtails, connectors (Metri-Pack, Micro-Pack, Weatherpack, etc.), Custom PCM Tuning and supplies. We are your one stop source for acquiring the products and information you need.

Who are we?
With a combined 20+ years experience, the owners of PSI were looking for practical, intuitive solutions to Electronic Fuel Injection Conversions into older vehicles. With no appreciable support from the automotive aftermarket PSI was formed. We have and continue to develop components and kits to meet your needs. If you dont see it on the site, feel free to contact us, we are constantly adding new things. Also, if you have questions or concerns, we'd love to hear from you as well. Thanks and once again, thank you for choosing PSI!