ok, the engine is fine. it runs good. time for the next step i have 2 intakes to try, i have made a number of spacers for plenum volume adjustments, if necessary. either the stock plenum with volume increases via spacers or short runner. http://focus.ti.com.cn/cn/lit/ds/symlink/drv102.pdf that is the url for downloading the pdf file for the PWM chip i am going to use to construct my VCT controller. this chip is under $10. the high power mosfets are $20 each, and feedback dampening diodes $.99 each .misc parts less than $30 for isolation PC board/compartment and misc resistors/rheostadts. DESCRIPTION The DRV102 is a high-side power switch employing a pulse-width modulated (PWM) output. Its rugged design is optimized for driving electromechanical devices such as valves, solenoids, relays, actuators, and positioners. The DRV102 is also ideal for driving thermal devices such as heaters and lamps. PWM operation conserves power and reduces heat rise in the device, resulting in higher reliability. In addition, adjustable PWM allows fine control of the power delivered to the load. Time from dc output to PWM output is externally adjustable. Delay Adjust Input On (TTL-Compatible) Off Thermal Shutdown Over/Under Current Flag Duty Cycle Adjust Load DRV102 24kHz Oscillator PWM 2 3 1 7 5 (+8V to +60V) (Gnd electrically connected to tab) Out 6 Gnd(1) 4 VS Delay The DRV102 can be set to provide a strong automatically switching to a “soft” hold mode savings. Duty cycle can be controlled by a voltage, or digital-to-analog converter for versatility. output indicates thermal shutdown and over/ limit. A wide supply range allows use with actuators. The DRV102 is available in 7-lead staggered package and a 7-lead surface-mount DDPAK package. It operates from –55°C to +125°C. for those that don't want to download the file. basically i am going to construct a high impedance branch fed by the crank position sensor 0-13v analog. the branch is a voltage splitter used for 0-5v ttl on/off control. the chip will be in standby until >3.5v i reahed and controller activates preset duty signal. output will be connected to two high power mosfet gates/switches that feed a non-feedback loop/anto feedback loop to the solenoids. switching speed < 25000hz. the controller can initialize the solenoid with 100% duty to set the position to full open then drop to preset duty. the controller is sensative to EMF and heat. aluminum isolation inside passenger compartment with feeds to the solenoids. 1 mosfet for each solenoid. duty is adjusted actively by rheostadt.