S90BYY

Hi everyone,

New to Scooby net, I have got a 1999 uk impreza turbo but the engine went pop so iv put a 280bhp 1997 import engine in, i have got it all running now and i runs like a dream.
What i wanted to know was that because iv still only got the uk ecu in it will it be like a restrictor on it and could it cause harm if I was to start booting it around, and would it need an upgraded fuel pump to get the full benefits out of it?

I havent drove it yet, just started it up to make sure its ok.

Thanks.