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Noticed no one has posted this, but the cold aspect of a cold air intake is only half the benefit. The other half is air velocity, when you are hard on the throttle the air being pulled through the intake starts to create a scavenging effect, increasing HP. It is a fine balance of peak air velocity and throttle response when selecting a CAI, (shorter gets you the throttle response, longer gets you the scavenging). Unless you are running a turbo setup, or a built N/A setup you will see little to no or even negative gains from an SRI in most cases comparative to stock intake. The SRI is only needed over a stock box when the motor needs more air than the stock box can handle, where as, a CAI will almost always show a decent gain (depending on setup of course) with-in reason, ie, don't expect 10% hp gains when your motor is bone stock.
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