Jet Performance 61500 Jet Adjustable Fuel Pressure Regulator. Fuel Injection Fuel Pressure Regulator. Jet Adjustable Fuel Pressure Regulator. WARNING CA Proposition 65: Yes. WARNING CA Proposition 65 Message: Warning Cancer and Reproductive Harm. Allows You To Adjust The Fuel Pressure. Maximum Efficiency And Horsepower Gains. The Jet TBI Billet Aluminum Adjustable Fuel Pressure Regulator provides you with the ability to adjust fuel pressure for maximum efficiency and horsepower gains. Factory TBI regulators are not adjustable and wear out over time due to weakening internal spring tension which reduces power and mileage. The Jet Regulator is a direct replacement and features a steel insert on the adjuster to prevent stripping unlike other designs. Precision machined out of billet aluminum by Jet’s in house CNC machine shop. Jet Performance Products is a proven leader in automotive tuning technology. Our background in tuning started with Jones Performance Fuel Systems over 40 years ago. Our Fuel Systems Division has given us the opportunity to tune everything from NHRA drag race cars, off-road race trucks and Sprint Cup cars. This experience has been the basis for our line of performance tuning products for street applications. JET’s engineering staff is unsurpassed and considered to be the best tuners in the industry. Our talented staff has made the company what it is today. Constant changes in computer technology of today’s cars and trucks demand that the JET engineering staff be the best. Automotive computer systems progress daily, just like every form of technology, so we are dedicated to providing the customer with the latest in performance tuning technology possible. Extensive research and development, dyno testing and constant fine tuning ensures the most power from each part we make. JET’s quickly growing staff of professional engineers and a highly dedicated team of performance enthusiasts run our everyday operations. Our ability to produce the best tuning in the industry gets you the end results that you want. With over 20+ years of experience in the automotive industry and in business since 2004, we strive to provide you with the best products and customer service. Our strong relationship with manufacturers and suppliers allows us to get you the parts you want fast and at the best prices possible. Most e-mails are answered within 24 hours, including weekends and holidays. Processing begins as soon as an order has been placed, therefore we cannot change, cancel or modify orders once they have been confirmed.