Engine breathing

Graham89

Active Member
Feb 21, 2010
132
0
Chelmsford, Essex
Hope someone can help here i got the car back this morning and have been checking it all over. I removed the oil filler cap while engine was running and its breathing quite heavy through the filler? Is this normal or am i looking at more problems here?
 
Lecatona HPFP (High-pressure Fuel Pump Upgrades)