I just picked up a 97 Cobra earlier this summer with 42lb. inj., Vortech V1 supercharger , forged internals. Im having a issue with the idle hanging a little bit so , in the process of checking out vacuum lines I noticed the vacuum line that runs to the top of the Vortech FMU isnt hooked to anything. There doesnt appear to be a open port or a T of any kind that it would have been connected too. Is it safe to say that the FMU isnt working at all since there is no vacuum to it ? and is this a normal practice since the injectors were upgraded and the car was tuned ?