I want change my air filter on my 2006 Honda Accord. Can i put in a cold air intake system?
Don’t expect any real performance improvements from a cold air intake. They are just eye candy. They may possibly flow air a little better, but no gains are from cold air. Here’s why. First, you need to think of your engine as an air pump. If your 2.4 liter engine had the perfect cylinder heads, perfect camshafts, largest possible valves, perfect intake manifold, at 6500 RPM, it can only flow about 275 CFM of air. If you have the V6 maximum air flow is 345 CFM at 6500 RPM. I doubt you have these perfect engine components, so the engine flows considerably less, as much as 25% less. It’s not as though you are feeding a big block V8 with a big Holley carburetor. So how much airflow do you really need? Next, you need to examine the throttle body and the tube that connects it to the air filter housing. I will use my car as an example. The engine is a common multi port fuel injected, 3.1 liter V6. On this engine, if you measure the diameter of the throttle plate, it is 2.035 inches (52 milli
