I need help with my idling issue

[eg95single]

Here's the short story I took my D15B out of my 95 eg and bolt into a 99 EK that had a blown engine which was automatic and swap in with the D15B cool. So I had to get a new ecu instead of using the p28 from the eg I had to use a p2p-a12 so I used the automatic harness and intake manifold but now the car is idling high low please help me what should I do

[lowcruzinteg4]

Dx?the ex vtec uses a 3 wire iac and the Dx uses a 2 wire it has to be rewired

[adam00]

Dx?the ex vtec uses a 3 wire iac and the Dx uses a 2 wire it has to be rewired

The ex uses a 2 wire iacv and the dx/lx/cx uses a 3 wire iacv

[eg95single]

So does it matter if the manifold is automatic.

[jealous1shateric]

Use the auto mani with the dx tb

[eg95single]

Use the what tb??

[adam00]

Is the motor vtec? Does it have any check engine codes?

[eg95single]

Yes it is vtec. And it does have a engine light. It's because of the iacv but we change it and still check engine light and idling funky