Go to vfaq.com, it shows you how to build a boost tester for like $5.00.

 

well no boost leak.. problem happening more often now. wires changed, sparks changed. coil next?... I think this best discribe the sound instead of hearing the vruum vruuumm noise its like putting ur 2 lips together lightly and blowing so ur lips flap.. lol.

 

Ohh i dont know if this will help but a day before i notice this problem the car was in the shop. The guy inspecting the car gave the engine a wash