Are high flow cats legal in CA? To be legal in California, a replacement part such as a new catalytic converter must come with a CARB (Calif. Air Resources Board) "sticker" or must be a direct OEM replacement part. There are no "high flow cats" that have a CARB sticker issued for them.
Will high flow cats pass smog in California?
HF cats will not pass the visual inspection since they do not have a CARB number. The Solo units install in the stock location, so the inspector would really have to be on their game... but to the letter of the law, no they will not pass.Jul 22, 2012
Will high flow cats pass inspection?
Hi, People say you can pass it without CAT as long as the car is tuned. They should pass the sniffer just fine with proper tuning. it will not pass a visual inspection.Oct 9, 2017
Will a high flow cat cause a check engine light?
Check engine lights can be caused by headers and high flow cats, but you don't know why. This is due to the fact that high flow cats don't filter as much stuff as stock cats and the secondary O2 sensor detects this and sets a code accordingly.Feb 12, 2022
Will a high flow cat fail emissions?
Yes, it's likely to cause emissions fail.Apr 10, 2014
Are high flow cats worth it?
Do high-flow catalytic converters add more horsepower? Adding a high-flow catalytic converter to your car can add horsepower since it does free up the exhaust flow overall. However, it's usually recommend as final piece to your exhaust system, especially if your car is making at least 20 percent more horsepower.Dec 4, 2020
Do you need a tune with high flow cats?
No high flow cats do not require a tune. As you are well aware, they will be optimized with a tune.Sep 2, 2016
Do high flow cats change sound?
Changing to long-tube headers along with the required x-pipe and high-flow cats will make for a louder exhaust tone at wide-open throttle but not change the exhaust tone much during normal driving. However, just replacing the stock cats with aftermarket high-flow cats might not change the sound at all.Jul 30, 2020
Do high flow cats cause CEL?
High-flow cats sometimes trigger a CEL because they often do not scrub as well as the restrictive factory units. Try resetting the ECU to clear the code and see if it comes back. A CEL for the secondary O2 sensor is irritating, but it won't cause any problems other than staring at the orange light in the cluster.
Does a high flow cat make exhaust louder?
High flow cats will be a tad bit louder for sure. Depending on what you find loud, it may not be a significant amount however.Mar 26, 2020
Will Cat Delete fail emissions?
They don't. They just live somewhere where there is no emission testing on used vehicles. Or they bribe a mechanic.Jul 20, 2017