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Challenger Mod Blog

Expert guides, safety tips, and build advice for your 2022 Dodge Challenger.

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Spark Plugs and Ignition Coils: The HEMI Ignition Upgrade Guide
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
Spark Plug Gap and Heat Range Guide for Modified HEMIs
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
Challenger Spark Plug Change DIY: Step-by-Step for 5.7L and 6.4L
How-To

Challenger Spark Plug Change DIY: Step-by-Step for 5.7L and 6.4L

Changing spark plugs on the HEMI is straightforward but has a few gotchas. This guide covers both 5.7L and 6.4L procedures.

Apr 18, 2026
spark-plugs, DIY