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this will be directly bolt-on, except you will need to swapover the single port 2.2 header to replace the dual port from the 2.5. the 2.2's intake harness will plug into the 2.5 body.

 

everything else is technique in regards to working on subarus. the engine is plug and play otherwise.

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the 2.5 intake will not swap onto the 2.2/ however, all of the compoents and the harness will swap onto the intake. But, this is not necessary as the 2.2 intake is a direct plug-on to the engine harness on the car side.

 

the engine management between the 2 are identical, withthe difference win the intake being the shape of the ports where they bolt to the head.

Edited by MilesFox
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yes, swap the flex plate.

the flex plate on the ej25 is larger than the ej22.

so keep the one that came on your car.

 

there will be a couple of metal lines on the front of the engine intake on the ej22 ,

near the top rad hose, they went to the charcoal canister.

in 98 they moved the canister to the rear of the car.

so either plug them or connect them to each other, you do not need them.

 

do not disconnect the cooling hoses on the A/C compressor.

just unbolt the compressor and flop it out of the way during removal.

(i flop it back after removal, less stress on the hose.)

 

reuse the A/C bracket that was on the ej25.

i don't know why or if it is even necessary,

but that's what they told me to do and it works fine.

 

and the small vac lines that go to the passenger strut tower,

there used to be 2 going over, then they switched to only one, whatever.

just make sure the stuff on the strut tower is connect by one,

and make sure all other hose nipples on the intake are connected or capped.

an open nipple will give you head aches was you get it running.

 

remove the intake from the engine to make it EASY to get to the flex plate bolts.

remove the axles from the trans to make it easy to get to the bottom two engine / trans nuts.

 

do not jack the trans up on the oil pan,

it will dent and cause problems.

 

http://www.beergarage.com has a good ''how to''.

 

good luck.

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OK hopefully this is my last post on this project. It runs and drives great but I have a couple small things. A knock sensor code, it sometimes doesn't shift at the right time and when I give it gas while driving it has a whistle.

 

Thanks for all the input and advice.

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