New Bosch Replacements Leaking or defective fuel accumulators not only cause hard starting, they present a fire danger. These are new Bosch replacements. For Bosch CIS injection systems. Learn More

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A simple twist of the dial for better gas mileage? Yes. You choose the fuel pressure you want from 2 to 5 psi. Fittings are included. A great addition to any carbureted engine. Universal Fuel Pressure Regulator Not for fuel-injected engines. Learn More

Genuine Porsche PartTech Tip: A defective or leaky cold start valve causes hard cold starting and rough idle when engine is warm. Learn More

The UTCIS-G™ and UTCIS-V™ Regulators are designed to replace the Warm-up Regulator in Bosch CIS fuel injection systems. The UTCIS™ is a cost-effective, and easy to install, replacement for the OEM part1. The UTCIS™ regulates the Control Pressure circuit with modern, reliable digital controls including a digital microprocessor and sensor system. Important Note: YOU, and not UnwiredTools, LLC., are 100% responsible for the configuration you put into your UTCIS™ unit. You are responsible for reviewing all Engine Maps prior to programming your UTCIS™ unit. If you are unsure of what values should be put into your UTCIS™ unit, please consider hiring a professional service technician who is qualified with the Bosch K-Jetronic™ CIS fuel injection system. NOTE: WARNING: THE STATE OF CALIFORNIA MAY NOT CONSIDER THIS PRODUCT TO BE LEGAL FOR USE OR SALE IN CALIFORNIA, OR IN A CAR REGISTERED IN THAT STATE, DEPENDING ON SUCH THINGS AS HOW THE VEHICLE IS USED, THE SPECIFIC INSTALLATION AND OTHER FACTORS. Learn More