Did you swap out the intake (and throttle setup) plus exhaust manifold?
Your best bet is to get a Haynes MR2 manual allowing you to determine where all the hoses should go, cost should be under $20. Your library may also have shop manuals.
One way to find leaks is to use an un-light small propane torch. Run the torch over any area you think may have a leak, the propane gas will be sucked into the engine and the result will be an increase in RPM.
If extra hoses, try plugging them plus any engine ports to prevent vacuum leaks. Make sure the MAP or MAF sensor is hooked up properly.
Your best bet is to get a Haynes MR2 manual allowing you to determine where all the hoses should go, cost should be under $20. Your library may also have shop manuals.
One way to find leaks is to use an un-light small propane torch. Run the torch over any area you think may have a leak, the propane gas will be sucked into the engine and the result will be an increase in RPM.
If extra hoses, try plugging them plus any engine ports to prevent vacuum leaks. Make sure the MAP or MAF sensor is hooked up properly.