In Reply to: TECHNICAL QUESTIONS** M3 TUNERS**VERY IMPORTANT!! posted by MEGA///M3 on February 12, 2000 at 17:40:45:
". Can anyone give me any info on how this would affect the car?"
With the HFM right behind the cone filter the airflow through the HFM is going to be very turbulent and uneven. This will keep the HFM from properly sampling the flow which will feed false info to the DME causing it to inject the wrong amount of fuel.