mongboot

Hope some one can help, I have a 2001 2.3 petrol galaxy and its a pain in the butt. Since I have had it it has always felt like its dragging not struggling engine sounds lovely just feels like being pulled back, quite hard to explain, if going down a hill and lift foot off gas its like I've put breaks on, (not usual engine break) it free wheels fine down a hill(naughty i know but figured that would tell me if its the breaks)my dad had done the brakes and it did its mot fab. Any ideas? Been told it could be the flexi hoses? R the servo pump (no idea what that is)