Vauxhall Corsa E 1.4T Craig Burns Jul 19, 2021 Vauxhall Corsa E 1.4t Customer was in for a stage 1 upgrade at our service centre in Glenrothes with some overrun added (pops & bangs). Another quality file supplied by SM Tuning Stats: Stock: 150BHP / 220NM. Tuned: 170BHP / 270NM. Gains: +20BHP / +50NM.