bigunit

Hi all

Small problem car is 98 turbo uk spec with catback system
boost pressure, oil pressure, and air fuel ratio gauges

Had car for near 3 years no problems then suddenly after a race with an evo IX FQ320 im overboosting to fuel cut off only noticed day after, all looks ok under bonnet should i disconnect battery to reset ecu any ideas dont want to by fuel cut defender as im selling car very soon. Think i must have been asking more than usual from the car so ecu upt the boost was up the **** of evo for 3 miles till he near lost it on the twistys he couldnt belive it when he pulled me over and i said it was only throwing out about 240 bhp to his 320 lol.

Any help would be good thanks