Account

Search

Downpipes - Benefits and Considerations

Introduction to Downpipes

A downpipe is a crucial component of the exhaust system in turbocharged vehicles, connecting the turbocharger to the rest of the exhaust system. Upgrading the downpipe can significantly enhance performance, exhaust flow, and sound.

Why Should You Upgrade Your Downpipe?

  1. Increased Performance: Upgraded downpipes improve exhaust flow, reducing backpressure and increasing horsepower and torque.
  2. Improved Turbo Spool: Enhanced exhaust flow allows the turbocharger to spool faster, improving throttle response and reducing turbo lag.
  3. Better Sound: Upgraded downpipes can produce a more aggressive exhaust note.
  4. Compatibility with Other Mods: Essential for maximizing the benefits of other performance modifications like intakes, exhaust systems, and tuning.

Types of Downpipes

1. Catted Downpipes

What They Are: Downpipes that include a high-flow catalytic converter. Why You Should Use Them: Maintain emissions compliance while improving exhaust flow. How They Work: Replace the factory downpipe and catalytic converter with a single unit that includes a high-flow cat.

Pros:

  1. Emissions Compliance: Often legal for street use, maintaining emissions standards.
  2. Improved Performance: Provides significant performance gains compared to stock downpipes.
  3. Reduced Odor: Helps reduce the sulfuric exhaust smell associated with catless downpipes.

Cons:

  1. Cost: Generally more expensive than catless downpipes.
  2. Moderate Performance Gains: Not as high-performing as catless downpipes.

Popular Brands:

2. Catless Downpipes

What They Are: Downpipes without a catalytic converter, providing a straight-through design. Why You Should Use Them: Offer maximum performance gains by eliminating the catalytic converter. How They Work: Replace the factory downpipe and catalytic converter with a single straight-through unit.

Pros:

  1. Maximum Performance: Provides the best exhaust flow and highest power gains.
  2. Aggressive Sound: Produces a louder and more aggressive exhaust note.
  3. Weight Reduction: Eliminates the weight of the catalytic converter.

Cons:

  1. Emissions Compliance: Not legal for street use in many areas due to emissions regulations.
  2. Increased Odor: Can produce a strong exhaust smell.
  3. Potential for CEL: Removing the catalytic converter can trigger the check engine light.

Popular Brands:

Installation and Maintenance

Installation Steps:

  1. Preparation: Gather necessary tools, including a jack, jack stands, socket set, and lubricant.
  2. Removing the Old Downpipe: Lift the vehicle and remove the old downpipe by disconnecting it from the turbocharger and exhaust system.
  3. Fitting the New Downpipe: Install the new downpipe, ensuring proper alignment and fitment.
  4. Securing the Downpipe: Use the provided hardware to secure the downpipe to the turbocharger and exhaust system.
  5. Testing: Start the vehicle and check for exhaust leaks and proper function.

Case Studies and Real-World Examples

A 2018 Subaru WRX STI with a Cobb Tuning catted downpipe demonstrated significant performance gains and improved turbo spool. The owner reported increased horsepower, better throttle response, and an enhanced exhaust note. Installation took about 3 hours with basic tools.

A 2017 Ford Focus RS with an Invidia catless downpipe showed maximum performance improvements and an aggressive exhaust sound. Users reported reduced turbo lag and increased power. Installation took about 4 hours with basic tools and professional assistance.

Conclusion

Upgrading your downpipe can significantly improve your vehicle’s performance, turbo spool, and exhaust sound. Catted downpipes offer emissions compliance and moderate performance gains, while catless downpipes provide maximum power and a more aggressive exhaust note. With various high-quality brands available, there’s a downpipe solution for every turbocharged vehicle and performance need.

Powered by Zendesk