just installed a drag gen 3 turbo kit on 94 integra gsr and i dont have the map sensor bypass valves on or the vaccum line ran from the wastegate to a vaccum source, would either cause the car to die when i come to a stoplight or sign and push in the clutch and hit the brakes ?

 

If you are talking about a check vavle that goes between the map sensor vacum and vacum source you dont need one until you start to boost above 10 psi... do yu have any CEL...?

What kind of EMS or you running??

 

a Vortech 12:1 boost dependant FMU. I had the check engine light, put the check valve on and don't have the light now but my car still dies.