vaccum leak

Hey guys, I own a 2002 automatic mustang gt with: flow master CAI flow master H pipe just had an engine swap done with a rebuilt 78mm bbk throttle body SCT/Bama tune I’ve had about 900 miles since rebuild. Originally when I got the Car back from the engine install it had the same problem, 2k...

Hello, so I noticed on my way home from work this morning a flutter like sound coming from the drivers side of the motor. Sounds like a big vacuum leak or massive leak of air when I give it gas. Kind of sounds like a loud hissing noise, almost like a loud fluttering noise but can’t tell if it’s...