Originally Posted by jpit

I have the R2Cs but have never dynoed them by themselves. I have the Modshack vent mod and often monitor the air intake temp and it is usually about 8 degrees above ambient temp so the vent is doing its job. It is very hard to duplicate airflow on a dyno even with large capacity fans. When the G3 was originally tested by a well-respected tuner there was a significant difference in the power produced with the bumper cover off and when it was on. I am skeptical of dyno results on intakes because you cannot reproduce highway driving and the ecu is very tempermental with rising intake temps.