ok, im thinking 38-36, what are you guys running, i have a rebuilt block, cobra upper and lower, gt 40 alunimum heads e-303 cam, 1.7 roller rockers, 24 lb injectors, 73mm c&l mass air meter calabrated for the injectors, equal length headers, mac pro chamber off road h pipe with o2's, and a adjustable fuel pressure regulator. im gonna adjust the idle and check the tps tomorrow, but i want to know what to turn the fp to so my idle will stop sucking a$$. later tom