Here's what you can try to minimize the chances of the check engine light illuminating, but no method is foolproof:
* Use a properly calibrated MAF sensor: Some CAIs come with a modified MAF sensor or instructions to adjust the existing one. This is crucial. A standard CAI won't work as well, and using the original MAF sensor *will likely* result in a check engine light. The 1997 Mirage has a relatively simple system, but altering airflow without proper compensation is almost always problematic.
* Avoid excessively large or restrictive CAIs: A drastically oversized intake tube might result in inaccurate MAF readings, while one that's too restrictive can hinder performance and cause issues. Find a CAI specifically designed for your vehicle or, at the very least, one that's a close match in size and flow characteristics to the factory intake.
* Check for proper sealing: Any leaks in the intake system between the MAF sensor and the throttle body can cause the MAF sensor to report inaccurate readings. Make sure all connections are tight and sealed properly.
* Proper installation: The installation needs to be precisely as the manufacturer details. A poorly installed CAI, even if the components are correct, can lead to problems.
* Consider a short ram intake: Instead of a full cold air intake which draws air from outside the engine bay, a short ram intake draws air from *within* the engine bay. This often reduces the likelihood of causing problems with the computer because the air temperature changes are less dramatic. This however will usually not provide as much performance benefit.
Important Considerations:
* No Guarantee: Even with careful selection and installation, there's no guarantee the check engine light won't come on. The 1997 Mirage's computer might be particularly sensitive to changes in airflow.
* Tuner/Reflash: To truly avoid issues with the computer, you'd likely need a custom tune or ECU reflash. This is advanced and expensive, usually not worth the effort for a relatively basic car like the Mirage.
* Emissions Compliance: Modifying your intake system might affect your vehicle's compliance with emissions regulations in your area. Check your local laws before making any modifications.
In short, getting a CAI to work reliably on this older car without a check engine light is highly improbable without additional modifications (like an ECU reflash), which significantly increases the complexity and cost. The likelyhood of issues outweighs the potential gains for this application. Weigh the potential benefits against the risks and required work before proceeding.
