I’m looking at upgrading my Holley EFI system to include the Hyperspark ignition system so that the ECU can control the ignition timing. Better idle control and more efficient overall. The only issue I’ve had to date with the Holley EFI is that the engine struggles to maintain idle when it’s cold, particularly when I put the Jeep into drive or when coming to a stop. In order to support the Hyperspark upgrade, I found that I need to update the firmware on the Sniper EFI ECU and handheld monitor. This video was perfect at describing what I needed to do.

Categories: Jeep Cherokee


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