Vac Leak? P1093 with a P0507 code

[blakefife]

I have a high idle and engine light so I scanned and this is what I got:
2 Faults Found:

004243 - Bank 1; Fuel Measuring System 2
P1093 - 008 - Malfunction
Freeze Frame:
Fault Status: 01101000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 221349 km
Time Indication: 0

Freeze Frame:
RPM: 1518 /min
Load: 14.1 %
Speed: 44.0 km/h
Temperature: 83.0°C
Temperature: 16.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.462 V

001287 - Idle Control System RPM
P0507 - 001 - Higher than Expected. - MIL ON
Freeze Frame:
Fault Status: 11100001
Fault Priority: 0
Fault Frequency: 2
Reset counter: 255
Mileage: 221359 km
Time Indication: 0

Freeze Frame:
RPM: 916 /min
Load: 25.9 %
Speed: 0.0 km/h
Temperature: 94.0°C
Temperature: 21.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.335 V


I am wondering if anyone else thinks this is an intake leak or a vacuum leak? I just changed engines a month ago. It didnt have this error before I did the aftermarket blow off valve spacer. Car ran like shit with it so I removed it. The Diverter valve seemed good, its the updated one with the piston and it didnt seem sticky. So I reinstalled.

ever since then the car has a high idle after its warmed up.

Also when switching from forward to reverse gears or vice versa causes a single misfire on cylinder 3 but not significant enough to throw a code or engine light. weird.

Any ideas on the high idle? it stays around 1000 rpm