hi, i have a civic 1994 1.5 LS1 EG SOHC non vtec. the car seems very slugish and picks up speed slowly. i have seen other 1.5 LSI pick up speed quickly even tho its 90bhp. is there anything i need to clean or adjsut to get it to pick up speed faster and also after 80mph the car speed gets stuck there and doesent move. i have a decat, 421 manifold, backbox, induction kit. i have serviced the car just 3 weeks ago changed oil, plugs, leads, filter etc and cleaned with carb cleaner but still the same any sugestions thanks.