International Swopping 6a12tt metalcase ecu for 6a13tt plastic ecu

will/vr4

Idling at the Lights
Location
Zimbabwe
First Name
Wilson
Drive
7g Galant vr4 6a12tt
Hey guys im new here but i wanted to find out if i could direct swop a 6a12 ecu with the 6a13 ecu
Ive tried checking pin outs and they look identical but i wasnt sure how it would affect the perfomance since one is tuned for 500cc more than the other as well as injectors
I was led to believe the plastic cases were tunable so thats the reason i wanted to change
 
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