sounds to me like the engine has WAY too much gas coming in for the setup.... a tunnel ram is a pretty extreme intake and if the motor isn't extreme to match it... all you're gonna do is run problems.... sounds to me like the guy before you had it set to be pretty leaned out, cause thats about all he could get it to run right with.... i'd say try and get it to where he had it, and then make it run with just a tiny bit more fuel