FIE's 12VDC valves boast 3500 PSI operating pressure, 11 GPM flow (@50 PSI pressure drop), -8 female ports and draw less than 1.7A. It is simply the BEST we've ever seen for this kind of duty.
An example setup: Station 1. (NC valve) "Stage Valve" lean-out to control engine temp while staged, ~700 degrees EGT desired. Connected to trans-brake or clutch switch.
Station 2. (NC valve) "Low speed" lean-out. Allows richer mixture (smaller main pill) off the line for best torque. Once the car gets moving (1.8 - 2.3 sec. out), opens and leans system for best middle track performance.
Station 3. (NO valve) Slight enrichment for best torque when shifting to high gear.
Station 4. (NC valve) "High-speed" lean out for best top end horsepower and MPH. The remaining 4th channel of the timer could be used to shift by time (twice if desired), activate a shift-light, activate ignition timing changes, etc. Any stations without a valve are shipped with a plug and a blank pill to disable it. Any returns will be charged a restocking fee.
4 Station Fuel Control Manifold | FIE Time Controller |