A louder intake will result, but you cant expect any phenomenal gains in performance. You see, it's like this: Your engine has a specific displacement size. Due to this, there is only a certain amount of air input that it will naturally consume. Once you have met that requirement, the rest is just sound. That requirement is met at the stock level, but there is a plenum like shape designed from when the engine is engineered to create a reserved and ready quantity of air available immediately, and not have to be placed (or drawn into the intake) This increases curb idle acceleration from a stop. A straight intake will cause a bogging out when you punch it from an idle. Once the maximum velocity is reached for the engine to have a given amount atmosphere and fuel put through it for combustion, it does not matter how big the intake is, You could use one the size that the Queen Mary uses theoretically and it absolutely will not got any better. So, if you have an over sized intake without changing the engine to an increased requirement. the result will be the same or worse with the exception of the sound being louder. The only real benefit from these type of intakes are noted when you begin to start literally pumping the air in by a forced charge such as supercharging, or turbocharged engines. Cold air intake, upper pipe, lower pipe free flow filtration and so on; on a naturally aspirated engine IS pretty much for the most part just a waste of money unless you are doing it for the sound effect. Put a pump on that intake or run a different atmosphere like nitrous oxide (33% nitrogen 66% oxygen) instead of natural air (~80/20) then you are going to have your intake doing the work it was intended to do.
As far as the requirement of a chip, in most cases I would say no. However, if you are purchasing a kit that contains control devices other than air temperature, such as a Mass Airflow Sensor, this will have a drastic effect and is more likely that a matching chip may be required.
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This is a bit off topic but is certainly worthy to mention. About ASE Technicians. You may or may not believe what I am going to say, but every ASE tech will say it is the truth wherever you go.
An ASE Tech is a rare and unique individual that has a high level of intellect in his field
In response to some answerers regarding The Institute of Automotive Service Excellence. In order to be certified as an ASE technician, you must undergo an incredible amount of testing that covers just about every possible status of an engine and / or vehicle. It is not uncommon for even some of the finest mechanics to undergo this testing for DECADES and still not pass and get certified. That's because all you have to do is get only a very little bit incorrect and you will not pass and get certified. It is simply not possible to wing it, get lucky, cheat, or know the test before hand. Also during study there may be similar (and sometimes intentionally misleading) questions, but never the same exact question is asked on test to test. I am certified Master Automotive Technician with the Educator endorsement, and let me tell you something, I took the California BAR exam in 1984 and passed it. I can say without even the slightest doubt that I know with a factual basis that the ASE Automotive Technician Test A1, and A8 is far more difficult than any BAR exam, much more intricate, and you must finish it in a fraction of the time that the BAR requires. Hopefully, this will give some folks an idea of what a certified auto tech really knows about automobiles, and that they are worth the price it costs to either hire them, or as a customer, go to a repair center that employs them. Chances are that if you don't, you will be replacing lots of good parts on your car that you did not need to because the technician was not good enough to know how to find the actual holistic cause of your automobiles malfunction. An ASE tech at whatever level is trained with ethics and taught in a fashion so that you are not cheated by replacing items you did not need to. It makes up ten fold for the little bit higher hourly rate (which is a set standard). Non certified facilities drop these rates so that they will remain competitive but you actually wind up paying far more because they need to replace more in order to solve the same problem or perform the same repair.