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The new Camaro direct injection system is advanced. The PCM is capable of identifying sensor readings that are outside of acceptable parameters and will compensate. The ability to compensate for sensor readings will allow the PCM to function with what is assumed to be degrading components. Sensor readings such as Mass Air Sensor frequency are expected to be within a particular range when sampled along with other engine sensors readings to include engine RPM, throttle position, etc. A component or group of components that cause sensor reading to be outside of acceptable range will lead to compensation settings from the PCM. The malfunction indicator lamp can illuminate if sensor readings (or combination of readings) are beyond these acceptable limits.

The PCMs ability to compensate results in restored functionality (or loss of temporary performance gains). Vehicle modifications can result in temporary “improvements” that are later adjusted back to original performance if those modifications result in sensor readings that are outside of the expected parameters. For example, installing an intake system with less restriction (more air flow) and mass air sensor mounting location that does not allow for proper sampling of the additional air flow. This will force the PCM to make necessary adjustments until it receives acceptable readings or combination of sensor readings. These “adjustments” result in original performance levels or an illuminated MIL if requirements are met.

An intake system that is properly designed to provide less restriction (more air flow) while allowing the mass air sensor to sample the incoming air flow accurately (as it did in the original intake) should not result in the PCM re-learning or compensating. The additional air flow resulting from less restriction should be measured from the mass air sensor accurately as the correct frequency reading per volume of air. Additional air flow should continue to be sampled accurately from the mass air sensor until the additional amount of air flow exceeds the functional limits of the mass air sensor or the allowable parameters of the PCM.

An unmodified Camaro will perform better at sea level than it will at 7000 feet elevation. This is due to the more dense air that is available at sea level. The mass air sensor will accurately read the difference in air density and the PCM will process accordingly (not relearn the performance back out) because the other PCM readings and functionality are within allowable limits. A properly modified Camaro will respond the same with additional air flow being measured accurately while maintaining sensor readings that are accurate and within allowable spec of the PCM.

The challenge for aftermarket manufacturers is to develop performance systems that provide added air flow while retaining sensor functionality within their design limits. Our staff of engineers and ASE certified techs utilize our in-house chassis dyno, flow bench, mass air sensor flow bench, rapid prototype equipment and much more to insure our products function and fit as intended. Our success has resulted in the consultation of performance intake systems to OEM manufacturers.