Challenger Mod Blog
Expert guides, safety tips, and build advice for your 2022 Dodge Challenger.
How-To
Spark Plugs and Ignition Coils: The HEMI Ignition Upgrade Guide
The HEMI runs 16 spark plugs — two per cylinder. Knowing when to upgrade, which plugs to choose for your power level, and how ignition coils factor in will save you from misfires and protect your engine.
Apr 18, 2026
spark-plugs, ignition-coils
How-To
Spark Plug Gap and Heat Range Guide for Modified HEMIs
Choosing the right spark plug gap and heat range is critical when you add power. Here's what to know.
Apr 18, 2026
spark-plugs, gap