Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
I would start by looking at live data from the TPS, MAP sensor and the MAF. Look at the outputs at key on engine off, key on engine at idle and what happens as you press the throttle.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)