Better gas mileage, more horsepower, more torque and better throttle response for your RV! This complete high performance ignition system is optimized for RVs to improve engine efficiency, engine life and lengthen intervals between tune-ups! Includes an Energy Pack computer, Torquer coil and exclusive Uphill Power Module. Energy pack uses digital microprocessors to determine the exact spark requirements under all engine conditions and adjusts the spark on a cylinder by cylinder basis to eliminate misfires, poor gas mileage, erratic idling, sluggishness, hard starts, plug fouling, and much more! Torquer coil creates an even stronger spark at low and mid RPMs where the engine works the hardest allowing you to merge into traffic quicker. Uphill power module automatically increases spark when the RV is traveling up steep hills allowing you to progress faster without downshifting. Works with all gas and propane RVs that have a distributor. Purchase Jacobs Spark Plug Wires for maximum improvements. Also purchase a direct plug in harness below for quick and easy installation.