no would run fine, thats how my car is running now on a 1.0 ecu, shaun did the swap from a 1.0-1.3 ages ago. iam gonna get in touch with him and ask some question as iam not 100percent on my car being a nats ecu and yours a non nats...mine might not run so good with your engine beeing non nats...my 1.3 should be fine on your non nats ecu tho. just with mine beeing nats my have problems with a pre engine.
iam not 100percent on this tho, it could run fine on my ecu!?