Gen 3 2006 M13a EGR help

Hi all 
I have a 06 Jimny m13a. I have been getting a P0401 fault (EGR insufficient Flow detected).
I tested the pins on the EGR its self and replaced due to low resistance between pins f & e as per the manual. 

The motor is standard but it does have a set of extractors on, which i'm not sure but may be contributing to the low flow. 
When the valve was out i started the car thinking i would hear the exhaust gas coming through the port or at least be able to feel it but i couldn't. 

1. Does anyone know if at idle with the EGR removed i should be feeling the exhaust gas ?
2. its it likely that the port is blocked ? If it is blocked is is best to clear it via the EGR from the back of the motor or remove the exhaust manifold ?
3. Would the increased exhaust flow due to the extractors being installed be contributing to a low flow at the EGR ?
4. or am i missing something ?

The line from the inlet manifold to EGR is clean and plenty of vacuum at the EGR. 

Any help would be appreciated. 
 

Do the headers have an EGR passage between the #4 port and the EGR passage in the head?

You should be able to feel and hear the exhaust gasses with the EGR valve removed.

Thanks. Removed extractors and found egr pipe was never connected to header just welded to look like it was. Thanks