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Do Catalytic Converters (Cats) Rob Horsepower?
Do catalytic converters rob horsepower? Lets find out! Lexus ISF Cat Delete
Removing Catalytic Converter: Pros and Cons
REAL RESULTS.. Is it really worth running NO CATALYTIC CONVERTER? We test it on our big power SUPRA.
Is a Cat Delete Worth It?
Does removing your catalytic converter give more power?
Do Catalytic Converters Kill Gas Mileage and Horsepower ? Let's Find Out
Cat vs No Cat: What's the HP difference?
Why You Should Remove Your Catalytic Converters!!! (Cat-less Exhaust Acceleration)
How Does A Bad Catalytic Converter Affect Performance?
Who is Stealing All the Catalytic Converters?
Should You Run a Catalytic Converter on Your Hot Rod?
