Are High Flow Cats Legal In CA?

Is removing catalytic converter illegal in California?

Most vehicles are required to be equipped with a catalytic converter.

Some older vehicles and heavy duty trucks may be exempt.

The vehicle is specifically included in the application list for the catalytic converter and the converter is legal for use in California..

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.

Do high flow cats smell?

High flows are called high flows for a reason. They flow exhaust fumes at a much higher rate, therefore a lot less “smell” (fumes) get trapped in the cats. “It works 60% of the time, every time.”

Can you pass smog with high flow cat?

No. It does not have a CARB (California Air Resources Board) number, so it should immediately fail visual inspection. Visual inspection will check for either the OEM equipment in place or a CARB number on an aftermarket unit.

In order to be legally sold and installed in California, a catalytic converter must undergo extensive testing to prove that it is durable and meets emission control requirements. It’s not enough for a catalytic converter to “just get you through your next smog”, it must be built to last.

Can you pass smog with Catless downpipe?

If there is anyone that passed smog with catless downpipes, please share. No your car isn’t going to pass smog without downpipes UNLESS you find some kids to pass you =( No your car isn’t going to pass smog without downpipes UNLESS you find some kids to pass you =(

Can I use a non California catalytic converter?

You may use a non-CA converter if they are physically the same. Sometimes, California emissions cars have physically different exhaust setups, and sometimes they are the same. If the non-California cat is physically the same size and fits right in, then you can use it with no problem.

Do high flow cats improve MPG?

HFC should theoretically improve your mileage as they increase the engines efficiency, that’s to say as long as you can keep your right foot out of the pedal. If you can’t that extra efficiency at moving air will require more fuel to be combined with it…

Do you need a tune for high flow cats?

No high flow cats do not require a tune. As you are well aware, they will be optimized with a tune.

Are high flow cats illegal?

Absolutely, not all 200 cell cats are legal, but 200 cell is the highest flowing cat that is. No one will know you have 100 cell cats until you need to get an emissions test. If you do, it will fail and you will have to fit cats that comply so you can pass. There is no fine for having non efficient cats, just no cats.

Will high flow cats throw a code?

Yep, hi-flow cats will throw codes 99% of the time.

Do high flow cats increase sound?

Yes, high flow cats are less restrictive than stock and will allow more sound to pass through your exhaust system.

Will a high flow cat quiet my exhaust?

It will definitely make a difference. The exhaust won’t be as raspy and the tone will be much more smooth and defined.

Can you use aftermarket catalytic converter in California?

Aftermarket catalytic converters must be exempted from California’s anti-tampering laws in order to be legally sold and installed in the state. … To determine the correct catalytic converter part number for your vehicle, you will need its make, model, model year, engine size and test group/engine family designation.

How much HP does a high flow cat 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.