FAQ: How to Correctly Gap Brisk Spark Plugs.

How to Properly Gap Brisk Racing Spark Plugs for Boosted High-Performance Applications

Welcome to GLS Performance Motorsports, where community and passion for high-performance tuning come together! If you’re upgrading your VW or Audi for serious horsepower, you’re probably already familiar with the importance of having the right spark plugs. For those using Brisk Racing Spark Plugs in your boosted setup, gapping them correctly is critical to getting the most out of your engine while keeping it running reliably.

Here's a step-by-step guide to help you gap your Brisk Racing Spark Plugs like a pro.

Why Spark Plug Gap Matters

The spark plug gap is the distance between the center and ground electrode on your spark plug. This gap is crucial because it directly affects how efficiently the spark can ignite the air/fuel mixture in your engine's cylinders. A gap that's too wide or too narrow can lead to misfires, poor combustion, and reduced performance, especially in high-boost, high-performance setups like the ones we specialize in at GLS Motorsports.

Tools You’ll Need

  • Spark Plug Gap Tool (feeler gauge or a dedicated gap tool)
  • Flat-head screwdriver (for adjustments)
  • Torque wrench (for installation)

Ideal Spark Plug Gap for Boosted Applications

For your high-performance, boosted VW or Audi engine, the recommended spark plug gap will usually fall between 0.020" to 0.028" (20 to 28 thousandths of an inch) depending on your boost levels and tuning specifications. Always refer to your tuner’s recommendation.

Note: For engines with more aggressive setups (higher boost or advanced tuning), a smaller gap is typically required to prevent blowout, which can occur when the spark fails to bridge the gap under high pressure.

Step-by-Step Guide to Gapping Your Brisk Racing Spark Plugs

  1. Check the Existing Gap
    Take your Brisk Racing Spark Plugs out of the box and check the current gap with a spark plug gap tool. Slide the appropriate feeler gauge between the center and ground electrode to measure the gap.

  2. Adjusting the Gap
    If the gap is too wide, gently tap the plug on a solid surface to close the gap. If it's too narrow, use a flat-head screwdriver to carefully bend the ground electrode outwards. Be gentle—you don’t want to damage the plug or the electrode.

  3. Recheck the Gap
    After making your adjustments, double-check the gap with your feeler gauge to ensure it's exactly within your desired range (usually around 0.020"–0.028"). Repeat the process if necessary.

  4. Install the Spark Plugs
    Once all your plugs are gapped correctly, install them in your engine using a torque wrench to the manufacturer’s specifications. Over-tightening or under-tightening can cause issues down the road, so make sure you get it right.

Tips for Gapping Spark Plugs in Boosted Applications

  • Smaller Gaps for Higher Boost: If you're running higher boost levels, like in a Stage 2 or higher setup, aim for the lower end of the gap range (closer to 0.020").
  • Regular Maintenance: Gapping spark plugs isn’t a one-and-done deal. Over time, the gap can change due to wear, so it's a good idea to check and re-gap your plugs periodically, especially if you push your car hard on the track.
  • Talk to Your Tuner: If you're unsure about the exact gap for your specific setup, consult with your tuner. At GLS Motorsports, we’re all about optimizing your build, so don’t hesitate to reach out.

Why Brisk Racing Spark Plugs?

Brisk Racing Spark Plugs are designed to handle the extreme conditions that come with high-performance, turbocharged engines. Whether you're flashing your VW ECU for more power or pushing the limits on the track, these plugs will help you get the most reliable performance from your build.

Join the Conversation

We’re not just about selling parts; we’re a community of passionate tuners and racers. If you have any questions or want to share your own spark plug tips, join our GLS Tuning Facebook Group and be part of the discussion!


With the right tools, a little patience, and this guide, you’re well on your way to ensuring your VW or Audi is running at its peak. Spark plug gapping is a small but crucial step in your high-performance build. Let’s keep making fast cars faster, together!