ok so my idle was always pretty low(at 0 or .2) so i decided to replace the TPS. I got the intercooler off and replaced it. then it wouldnt even hold idle it just shut off every time....(i know a vac leak) but i couldnt find any and i tightened all vac hoses and itercooler pipes. well i went to try it again and it started and i watched the rpms go from 1.5 to 1 rapid then from 1 it went back to 1.5 rapidly and then back down to 1 and died...now it wont start it turns over but thats all i get.....i need all suggestions....the car is an s4

 

this is my DD so i really need some help here

 

also i know its not flooeded because i tried the unflooding procedure.......no one has any ideas