Was Bout To Install Air Intake On Lancer....Saw MAF Sensor....I Couldnt Find Anything To Fit On Box End Of It....So I Put Everything Back...(Stock Intake).....Now Car Stalls....Idles Too Low...Check Engine Light Is On....Sluggish...I Already Disconnected battery for 15 mins.then let idle for 10..but nothing happended.....trying to figure out whats wrong?...only 10k miles.....has warranty...but i dont know if i voided it....if i did..i have to pay for $500 MAF Sensor

 

As long as you put everything back stock you should be fine on your warranty and it does sound like a MAF problem