DX vs EX egr valve

[Tippey764]

So i just noticed today that the EGR valve is different on an f22a1 to an f22a6

They physically look the same and fit each other so whats the difference?

f22a1 : 18011-PT3-A00
f22a6 : 18011-PT6-A00

[JaK FRoSTWhiTE]

It's more than likely because of the different Manifolds, i want to say. The EGR System is designed to reduce oxides of nitrogen (NOx) emissions by recirculating exhaust gas through the EGR valve and the intake
manifold into the combustion chambers.

Probably the insides are different as well.

[Tippey764]

It's more than likely because of the different Manifolds, i want to say. The EGR System is designed to reduce oxides of nitrogen (NOx) emissions by recirculating exhaust gas through the EGR valve and the intake
manifold into the combustion chambers.

Probably the insides are different as well.

So it probably just lets a different ammount of exhaust gases to pass into the intake manifold?

[JaK FRoSTWhiTE]

So it probably just lets a different ammount of exhaust gases to pass into the intake manifold?

Or it may take a different amount of vacuum to open the valve.
Since the two manifolds are different, they might generate different pressures/vacuums at different times.
That's what it sounds like to me