Technically im a noob here, but to cars im not a noob. Recently made the swich from Honda to VW and couldnt be happier to be with you guys! Just got an 06 GTI MKV and heres my situation... so every now and then i get a CEL and get p0507, IAC reading higher volume of air then normal. i also get...

My CEL comes on every few days and goes off a day later. throws p0507 code IAC reading higher air then normal. Also throws code for catalyst threshold lower then expected but thats due to the other problem i assume. I can feel a small loss of power, fuel milage went down a tad, i get a small...

CEL came on today and it threw a P0507 for IAC reading more air per revolutions then it should. Also 2 codes both for catalyst system below threshold (I assume from the IAC code). I get odd but on-point boost surges (at about 1900rpm boost pulls hard then at about 2300 it falls on its face, then...