i just finished installing my skunk2 IM and theres this whistling sound i just wanna know if this is normal i mean i double and tripple checked everything and itz all fine everythings is hooked uip right but the sound is still there.

 

Vacuum leak maybe? How is your idle?

 

idles around 6-675

 

ya that sound is normal. its because of the increased airflow due to the straighter ports of the runners. Mine does it too.