they say they evap solenoid and the iab solenoid need to be (dual butterfly hookup) on the pin location

 

on a gsr intake manifold, there are 2 sets of intake runners - long tube and short tube. One set of runners (I believe the short tube) are have a set of butterflies that default to open if they have no vacuum.

Once the car is started and vacuum is applied, they close, and the engine uses the long tube runners for low end torque. Above 4400 rpm (I think), the ecu sends a signal to the IAB solenoid that opens the short runners and the engine uses both sets of runners for top end power.

So, when swapping in a gsr, you have 2 options:
1. You can unplug the vacuum from the IAB, and just run them open all the time. Top end will not change, but you will lose some power below 4400 rpm.

2. You can wire up the IAB solenoid to the proper pinout on a P72 ECU. Then it will open and close properly.

Personally, I'm planning to hook them up on the swap I'm working on.

 

vindicator9000 thanks you help me a lot that was the main thing a was worry about was those two wires they goin from a auto to manual swap was easier than those two wires you help me to be able to start my car tonight thanks it took me 1 week to do the swap my self not knowin any thing bout a motor swap

 

and any one that wants to do a b18c into a del sol is almost a direct plug and play any one with any motor skills like changing your oil can do this swap i went from a automatic to a standard swap easily i did have some head ache but just small pieces hydro clutch line,hoses, belts and oil had to go get from local auto store well goin put the final touches like draining the tank cv shaft repining the wire they hooked up just relocate them maybe just one put battery in some gas start it up and change oil simple things