no leaks i can see..it wouldn't be boosting very well!, only code it flashes is saying the o2 sensor is gone, and it's been clutch started?? (i dunno thats what the guy that did my wiring said!) but i have another o2 sensor from a ZE that was perfect.. same thing is happning, i'm thinking it's cos of the idle control module (little green box on the throttle body) my 3SGE throttle body will be taking care of that!!