If your CIS-Kjet equipped car was built after 1980 then has an oxygen sensor. The oxygen sensor controls a device called a Frequency Valve (or a Lambda Valve). The Frequency valve is used to “trim” the amount of fuel injected to allow the catalytic converter to work. As these older cars age, suffer failures, and

If you’ve worked with Bosch CIS (Continuous Injection System) you know that the Warmup Regulator (WUR) is a key control element that controls the fuel delivery all through the engine operating cycle, not just during warmup. The UTCIS is a fully programmable electronic replacement for the mechanical original WUR. We work with a lot of

Lots of cars were made with Bosch CIS-Kjet.  Most cars built in Western Europe in the 70’s and 80’s used CIS.  And if the makers of those cars go out of business the cars became “orphans”.  The fuel injection systems of these cars will often drift way out of calibration before they fail completely.  That’s

Without a doubt the Bosch CIS equipped car that is the most challenging to tune and repair is Porsche.  The engine of an Air-cooled Porsche is carefully tuned and it’s complicated.  The engine compartment of a 911 is not a place for a novice.   Sure there are a lot of parts in a CIS-equipped

V12 applications are now supported!  Both Lamborghini and Ferrari produced V12 cars which used 2 each of independent 6-cyl CIS systems.  We just completed a successful installation on a Lamborghini V12 using 2 each of UTCIS-V systems.  The shop who purchased the systems over a year ago for a different car sent us his units