my 95 ls turbo always ran fine but all of a sudden idles like ****. just wants to die. i rev and it will go to like 4k rpm then pretty much run out of gas and die. i looked into my map sensor and i pull it off during idle and nothing changes, idle stays the same. got good vaccum tho. i am running 3 check valves on it due to turbo incase thats could be something. never had problems till now and even a check engine light. ran the code (41) just about a 02 sensor i belive. could it be my map sensor and could it be a bad map? any answrs would be helpful