And...(at the risk of offending the NCRS or other "purists"
, it is possible to have the "chip" re-programmed & eliminate the secondary port throttle plates, all the vacuum lines, check valves, pump, etc., etc. and run on the secondaries FULL TIME.
PROS: Parts that don't exist NEVER FAIL, & they don't cost much!
CONS: The need for the FULL POWER switch is vacated. NCRS points lost.