How much HP does a high flow downpipe add?

The amount of horsepower you will get from a high flow catalytic converter depends on your engine and the modifications you have made to it. You may see a horsepower gain of as little as 5 hp or as much as 60 hp. You may also get an extra 5-60 ft lbs of torque.

What is a high flow Catted downpipe?

Similar to cattless downpipes, high-flow catted downpipes will allow your turbos to spool faster and deliver more power. However, as you likely assumed, these downpipes have catalytic converters and are more restrictive than catless downpipes. They still provide relatively solid gains for turbo spool, power, and sound.

Are high flow downpipes illegal?

Emissions Testing A catless downpipe is technically illegal as it violated emissions laws. With high-flow options, you will pass emissions testing and are in compliance with the law.

Why does downpipe increase horsepower?

On a turbocharged vehicle, a downpipe is a part of the exhaust system that connects the turbo exit to the catalytic converter. Sometimes, after-market downpipes improve performance because they simplify the path and increase the gas flow rate over the stock unit.

Are Catted downpipes worth it?

Installing a catted downpipe with a tune can give you up to 40 horsepower and probably half that without a tune – about 20 horsepower. This is a pretty good boost of horsepower from just one performance mod. Louder exhaust sound. Aftermarket downpipe is wider and less restrictive than a stock downpipe.

Are high flow cats worth it?

Put more simply: If you’ve made major upgrades to your engine, which are defined as increasing power 20-30% (or more), then high flow cats are for you. If you’ve just added a cold air intake or performance engine tune, your money is probably better spent elsewhere.

Does Catless downpipe give more power?

You can expect catted downpipe to provide additional 40 horsepower with tuning (20 hp without). This is a decent horsepower gain given its price point. Catless downpipe provides even more horsepower gain than catted downpipe. You can expect catless downpipe to provide 50 horsepower with tuning (25 hp without).

Which is better Catless or Catted downpipe?

Catted downpipes provide slightly less horsepower (about 5-10 lesser) but they have much more pros than the catless version: significantly less emission, no unpleasant smell, and has lesser chances of turning on check engine light (CEL).

Are bigger downpipes better?

The bigger the pressure differential, the better it works. This is why a bigger engine (which increases pre-turbine pressure by creating more exhaust gas) helps spool. And most importantly, this is why a big downpipe (which reduces post turbine pressure by improving flow) helps spool.

What’s the difference between catless and high flow downpipes?

The only difference between these two options, as you can imagine, is a catalytic converter. Catless options will completely remove the catalytic converter while high-flow options will use an upgraded or higher performance cat that is less restrictive than the OEM system.

Where does the downpipe go in an exhaust system?

Technically, the “downpipe” section of an exhaust system connects the headers or exhaust manifold to the catalytic converter(s).

Which is the best downpipe on the market?

Again, VRSF has our favorite high-flow downpipes on the market. At $400, these are the best combination of price and quality on the market, with most high-flow options running $650+.

How much horsepower can you add with a downpipe?

Despite having fairly efficient and well-laid out turbo exhaust systems, many late-model diesel pickup owners can add 10-20 hp with nothing more than a new downpipe. Bottom Line: If you own a turbo-charged vehicle, it’s wise to research your downpipe options.