So if I were to buy an EJ20 turbo from a vendor on ebay, what would I do for management? Switch up to obd2?

 

you mean an older ej20? the wrx is ej20 powered already. explain

 

yes an older ej20 from an early 90s turbo legacy

 

you can convert anything... as long as the old ej20 will accept sensors and such from an ej203

 

Most Subie guys that do a turbo engine swap end up swapping in the appropriate ecu too, but unfortunately have to rely on afc's and such types to try and add extra fuel. There are a certain few people who are working on obd1 subaru ecu's and early year obd2's to allow reflashing, but my guess is it's going to be a while before you see a fully functioning editor for them.
Upside to subaru EJ engine series: most everything is interchangeable like honda D/B series.
Downside is most jdm turbo EJ swaps require swapping complete engine/engine bay/dash harnesses and splicing a lot of connections.

 

i had a cel pop up in pulling 0 vac up a BIG hill today. ill check it when i get to work tomorrow, im hoping its p0420 or something will be warranty

 

Well I'd be fabbing the harness anyway, using whatever plugs I cut off an old EX harness. I could also use a chipped p28 to control the motor with Honda distributor guts in the Subie dist or something. The problem I see coming up is the speedometer and getting a Subaru vss to work with the Honda ecu.

 

Honda Speedo is looking for 2 pulses for every wheel rotation, it's actually pretty simple to modify an ABS ring on an axle to have two teeth, and shmitt trigger the output.

 

subaru doesn't use distributors. coil packs or COP.

on a thread related item, my p0420 came back. cleared it at work, gonna disable the cel this weekend via dannos laptop, unless some nerd geek knows of a good wireless usb.

 

Complex is right, except for extremely older subie's they're all waste spark COP designs.

Disable that p0420 and the stupid cat efficiency code will never bother you again.