u prob have the same problem im dealing with which is runaway boost, and no the oem part is a 295.00 rip off... you can get better forged ones for half the price. you found a cheap one like i did which should work in theory, but it looks a little different from oem
They don't sell 'forged' WGA, a company named Forge makes BPV and WGA for these cars. I have one and it spikes more than I like but it's adjustable and the ATPs only last about 30k miles.