i have a 16 rs 27k miles. bought it used with 14k. was all stock. i bought the turbosmart kompact shortie with upgraded pink spring maybe 6 months ago. when i first put it on, it worked great, had a nice sound to it. eventually over the next couple months, the car felt like it had no power, like someone took the turbo off. it would still show boost on the gauge but wouldnt even accelerate hardly. on a whim, i reached up to that valve, and it was super loose, like about to fall apart loose. i tightened it back up to full tight then minus 2 turns like it was before. it drove better since doing that. but now its not as loud and car feels "slow" again. not sure what to do except to remove it at this point. Has anyone else had a problem like this with theirs?