ok i resently swap my intake mani on my mini me to an high flow one . now when the car starts the idle is rough and will not smooth out it sureges between 800 and 2000 rpm ok all sensors are sonected and look ok i think it may be an crossed vac line / also wheni rev the car up antifreeze comes out the muffler ? and then starts to have white smoke ok i pretty sure its not an head gasket cause it was fine before i did the mani swap anyone have any ideas to what it can be ?