Depends if you mean the newer version compared to the older Red Top version then yes the difference is due to when Vauxhall changed the emission out put of the 2.0 16v and 2.0 16v Turbo's due to the new laws in place at the time. But to be more precise the pre 1994 Red Top Turbo (what I've put in my Vectra) is 210bhp standard and the newer Eco-Tec Turbo is about 187bhp