[quote author=Sweetcakes link=topic=14252.msg176218#msg176218 date=1239314571]
You can ECUtek it but there's no point unless you are planning on doing a few mods to the car like decat etc. Run it on E5 or on E5 + booster and the car will be fine. Get a knocklink if you are really worried for the odd occasion that it does DET but the ECU can retard itself down to E5 levels so no need to remap it. Even mapped cars will DET with a bad batch of fuel so a knocklink would be recommended either way.
Ciaran RS-RA at ASD automotive in the traders section is now supplying it at 13.50 a bottle and each bottle can treat 3 tanks of fuel with that and will give you that extra bit of confidence.
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thanks man, had my evo ecutek'd by Ai in Belfast so am aware of its performance gains but i wasnt sure if it was available for the legacy or not, thanks.
i dont plan to mod if im honest, but you know yourself, that ends very quickly!
if i do mod, then i suppose it will be :
uprated fule pump (is it needed as much as the older impreza's?)
decat
good filter, and that would be it tbh, i would be more worried about the safety and DET end of things.