Originally Posted by Beachin_240

Yes, that's your wastegate actuator. And it looks like you don't have the stock recirc valve anymore since you apparently ditched the stock SMIC/piping. If you no longer have it, it'd probably be a good idea to get a BOV of some type, and put it on the hot pipe (between the turbo and intercooler). If you want to avoid a slightly rich condition when you let off the gas, you can recirculate it by running an additional pipe from the BOV to the intake pipe between the MAF and turbo. Stock BOVs from first-gen DSMs are cheap, and quiet.