Sports cat vs. downpipe
Feature
Sport Catalytic Converter
Downpipe
Purpose
Reduce emissions, improve performance
Improve exhaust flow, increase horsepower
Location in exhaust system
After the exhaust manifold, before the catalytic converter
Between the exhaust manifold and catalytic converter
Diameter
Typically similar to stock catalytic converter
Typically larger than stock pipes
Emissions
Designed to reduce emissions
May or may not affect emissions
Horsepower and torque
Designed to increase horsepower and torque
Designed to increase horsepower
Combine with...
Combining a sport catalytic converter or downpipe with other Heinz services can help to optimize the performance of your vehicle.
custom exhaust system
Looking to improve the performance and sound even more? Consider adding a custom exhaust system.
What we offerengine tuning
A stage 2 tune is often necessary to achieve the best results when installing a sport cat. or downpipe.
Learn moresuspension modifications
Help to improve the overall performance and handling, making your car faster and more agile on the road.
Learn more200cell Downpipe and Stage 2 Remap
Project BMW X3 M40i
Experience the Ultimate Upgrade for Your BMW X3 M40i with a 200cell Downpipe and Stage 2 Remap. In this video, you'll see firsthand how these performance enhancements transform the X3 M40i into a beast on the road. The 200cell downpipe and stage 2 remap unlock the full potential of the X3 M40i's engine, resulting in an even more powerful and aggressive sound. See for yourself how the X3 M40i performs with these upgrades
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