better with a vacuun leak
 

whats up guys this is the deal i have a first gen with cartech turbo kit running rich so the other night my boost gauge stop working next day im driving the car and is driving better no more black smoke air and fuel gauge right and not wasting a lot of gas and pulling harder than before i know where is leak is a small one what you guys think? shoul i keep driving it like that or fix the leak? by the way running 12 psi