yeah sorry about the vagueness (sp*) of my post... No the car wasnt previously tuned with MSnS, i am currently running MSnS but no spark it is only controlling fuel until i get a good fuel setup. My motor is forged rods low comp pistons (howell bottom end kit), 525cc injectors. i am almost positive the timing is fine because i checked the timing marks last night and they lined up perfectly to my eye. As far as vaccum leaks.....i have no clue, i have no loose vac hoses, to my knowledge. Im pretty sure it has somethign to do with the tuning. I need some serious help in this area. any one who would have the patience to help through this will be much appreciated. I thought loading a basemap from someone else with similar setups would atleast get me started and idling but i am mistaken.