Quote:
Originally Posted by fastball
That engine had a throttle cable. Older engines respond better to CAI.
The new engines with drive by wire throttle are so dialed in and computer managed that a CAI without a full tune will do absolutely nothing for you. The sensors will counter adjust the air and fuel intake to compensate for the larger volume of air and you'll be running like you would with the stock intake and filter.
|
CAI's do more than just allow for larger volumes of air. Granted, the stock intake is a CAI already. So the other benefits aren't going to be as dramatic but they may still exist.
1. Colder air. Insulation, perhaps a better snorkel location, less distance the air has to travel, all have an effect on the intake air temp. While the ECU will compensate so that the volume of air is the same, the colder temperatures will benefit by keeping the timing as advanced as the ECU will allow and not have to pull timing as much like a stock setup would due to heat soak.
2. Less restrictive. Restrictions in the stock intake (perhaps due to cost or due to audible concerns) may be reduced with an aftermarket intake. This effects throttle response.
3. Aesthetics. While expensive, it wouldn't be the only thing that people spend that kind of cash just to make look a certain way without impacting performance.