Review on Edelbrock 22716 Sleeves Resistance Performance by Christopher Morgan

Bought these on a whim with low expectations for a performance increase for a 75,000 mile 6.0L L96 engine. The coil on the rail usually dies before the connector wires are shorted/deteriorated. Although I had no issues with ignition prior to using the factory plug wires, they DEFINITELY added some smoothness to idle and acceleration. Of course, these are all jokes, but as an example, I could definitely say if an AC capacitor speeds up. I can't now. I would STRONGLY suggest getting some wire pulling pliers for the 3/4 inch connector.