Repeat this process and evaluate the result. If the engine vacuum and/or engine speed increases, then adjust the passenger side idle mixture screw the same amount and monitor the vacuum reading. Begin by adjusting the driver side idle mixture screw in (clockwise) approximately 1/8th of a turn while monitoring the vacuum gauge.

This works in conjunction with the Micro Fine Adjustment.Holley Sniper How to Set The IAC Idle air Control in 5 minutes or less. Return lines must originate from the Sniper unit.Adjust the air pressure the rifle is using via the dual regulators, how long the valve stays open with the front valve adjuster, and now adjust the strength of the hammer with the completely redesigned micro and macro power adjustments. There is a diagram on the Holley site showing a bypass/regulator alternative in the supply line, but this WILL NOT work.

so I dialed down the idle adjustment screw on the primaries, opened up the secondaries a crack then readjusted the system so the IAC is around 5% when it's warmed up.

The enlarged bore sizes allow for increased airflow to support your higher horsepower needs, a progressive throttle pulley enhances low speed drivability and a double return spring provides solid and secure throttle control…Build: 408w, large cam, Holley Super Sniper, Hyperspark Distributor, MSD digital 6al (pn 6425), dual fuel pumps (58psi), battery located in trunk. See more ideas about holley performance, holley, performance.

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