I swapped a 2.5 block into my 02 wrx. still has 2.0 heads.

running vf34 turbo and sti pinks with supporting mods.

Cobb doesnt have a map for this setup.

I know if I load the 2.0 vf34 map it will run lean because of the greater volume of air being moved by the larger bore.

I was thinking of loading the 2.0 vf39 map.



Anybody have any ideas/ thoughts?



I'm planning on doing an open source tune after break in.

 

there are a few local tuners....pray that they contact you after this thread

 

How long have you been in my bf's car?

 

claytons car? since i stole it from your guys driveway last night

 

you should come by and see the 2.5 in the silver car.

the green and black looks funny with the red cam gears. like a christmass tree engine or something

 

Contact the tuner you are going to use for the tune, and have them send you a break in map.

 

will do...can i drive it around the block and do a couple wots and wait for it to blow haha jk...i do want to see the car though

 

i have, but he hasnt sent it yet. i want to start the car tonight.

 

Will power.

 

actually, I ran my 'hybrid' on the stock ECU map for a while. I'm still surprised it worked.

 

I remember Tomei did something similiar:
sorry the uploads are so big...i wanted to keep the article before it was lost...if anyone wants the full article i can just post it up...

 

interesting...i guess it does compensate up to 25% or something...or so i have read.

 

tomei used the jdm heads, i uded the usdm heads, but ported them to the size of the jdm, (match ported to TGV body also) then matched the 2.5 cylinder wall width to the 2.0 head's combustion chamber. it is a biatch. and takes quite a bit og dremel work.