The ECU uses signals from the oxygen sensor to which the catalytic converter acts as an adjunct, making the right information deliverable to the engine computer. They allow exhaust gasses to flow more freely because they don't have the same restrictive nature as a stock catalyst. Steep angles and abrupt pipe diameter changes should be avoided. Is Deleting Your Catalytic Converter Worth It? - Pros And Cons. Catalytic converters are among the most important components on cars that operate with fuel injection. High-flow cats are upgraded versions of regular catalytic converters filtering the exhaust fumes.
Keeping the gasses from the turbo outlet and wastegate separate until farther back in the system is an attempt to combine the advantages of not collecting the gasses and the real world. Your vehicle may also be subject to impound which can rack up additional fees. The second one on the list is Flowmaster catalytic converter. What are high flow cats. Rough sound and potential legal issues easily outweigh the fact that straight pipes are by default the cheapest exhaust option.
As the name implies, a catted downpipe contains a catalytic converter and a catless downpipe does not. Further, aftermarket high-flow converters are made to meet even the strictest requirements for carbon emissions. Robert Anderson is a world class motorhead who rebuilt his first carb at age 10, his first engine at age 15, and completed his first full hotrod build when he was just 18! So, high-flow cats can reduce toxic gas drastically and eject less polluted gas into the open air. Join Date: Feb 2017. One of the reasons behind that is the ECU uses information from the oxygen sensors from before and after the catalytic converter to fine-tune performance. But since then, automakers have made adjustments to this and now catalytic converters are not nearly as crippling of restraint as they used to be. Pros and cons of high flow cats pass emission inspection. Moreover, if you live in a state that requires annual inspections, your car won't pass without a catalytic converter. Here, we have platinum and palladium, which burn – or oxidize – the hydrocarbons (HC) and carbon monoxide (CO). So, be sure to check with the local DMV to see if upgrading to a high flow catalytic converter is, or isn't, legal where you reside. Unless you are making over 500-600 h. p. anything over 3″ is a case of diminishing returns and in most cases has no advantage.
We appreciate your support. Foregoing the cat device at your next emissions exam is certain to bring higher than normal results. Once you have the catalytic converter out, take it to a workbench. Adequate Processing for The Exhaust System. That is the main factor that makes it desirable to the factory and why it is used on many stock exhausts. Reasons to Invest in A High-Flow Catalytic Converter. Indeed, the catalytic converter, while incredibly good at scrubbing away harmful emissions – restricts the flow of your exhaust fumes. Thus, the high-flow cat is a good investment if you want to increase the car's fuel economy, performance, and power. Also know: What is a pre catalytic converter? One of the major reasons why people choose to do away with a catalytic converter is added horsepower. Yes, one of the cons or demerits of using a high-flow cat is that have an exhaust odor smell that you can notice while driving the car at a low speed or gears. Replaces the restrictive factory cats with high-performance HJS sport catalytic converters for maximum performance and sound. Owing to its intricate webbing, it takes more effort for the fumes to travel through them. Put it in a vice with one of the sides facing up, put in a long chisel, and line it up with the honeycomb pattern in the converter.
This design separates the gasses in the beginning of the turbo outlet and joins them at the rear of the bell mouth section. Any vehicle can be straight piped. Swap out the exhaust, and do the cats too, why don't you. Pros and cons of high flow cats love. These include using straight pipes or deleting the mufflers to open up the gas flow. As the exhaust fumes travel through the catalytic converter, our 2 catalyzing stages get to work: - Reduction Catalyst – In this first stage, platinum and rhodium aid in reducing NOx emissions. Depo headlights/DDM 6000K HIDs/RatFink CAI/Nokyo Hyperyellow fogs/DDM exhaust. When all this airflow improves, so does your horsepower. It's an easy way to add a few extra ponies without spending a ton of money. Location: Oakville Ontario, Canada.
It's not what we'd call "magic", as all the sciences behind a high flow catalytic converter are quite simple. High cats reduce emissions and backpressure and increase airflow which increases the performance of the engine. In other words, if you've done major upgrades to your engine, then a high-flow cat is for you. Regular cats cost a lot more than high-flow cats, and they do a lot more than the standard cat. Can You Use High Flow Cats in California? But unlike a conventional cat, the honeycomb lattice inside of a high flow catalytic converter has wider cross-sections. That also means re-tuning the engine each year, so it's not a small amount of work for those nominal horsepower gains. In that case, Kooks Custom Headers' GE-307540 will do just well. Should You Add High Flow Cats to Your Car. 9 Pros And Cons Of High Flow Cats ». The cat has a connection with the computerized engine system.
The cutting-edge technology used in high-flow cats can filter the pollutants way more effectively than traditional cats which made it possible to decrease such away. For these cars, it's common to delete one or more sets of resonators and replace them with straight pipe. Whatever you call it, a downpipe is the first portion of the exhaust post turbo and is typically the most restricted portion on factory turbocharged vehicles. 3″ is usually capable of flowing 500-600 horsepower before becoming a restriction.
Another option you have instead of removing the catalytic converter is to "gut" the catalytic converter. Our customer service team often fields a certain call with a concern that "my car is running rich. " When in reality you are just losing fuel economy and not really gaining a whole lot. The engine exhaust gases are fed into a chamber through a passage called the catalytic converter. It is this restriction that robs some of the engine's power by creating exhaust back pressure. These are carbon monoxide (CO), nitrogen oxide (NOx), and hydrocarbons (or volatile organic compounds, VOCs). Your results will be better, your engine will be happy and you'll be legal. Nitrous-oxide (NOS).
If you're not installing a straight pipe through the converter, then the procedure ends here. There are differences between high-flow cats and regular cats. The first step towards gutting a catalytic converter is to remove it entirely so you can get access to both the inlet and the outlet. As turbo configurations change, the name might also (the 2015+ WRX has a low, front-mounted turbo, where a "J-pipe" is the first part of the exhaust connected to the turbine housing outlet). Pro: Free up a few ponies. This is assuming that you have designed the rest of the system up to par.