Forgot to mention this last night, I've had dead on arrival TCVs. Which one did you buy? I recommend the correct PN Pierburg from FCP Euro or similar. I tried that gray Porsche TCV and it limited my boost to 8 PSI when I'm tuned for 16. OEM TCV is the best option for these cars.99commutervolvos70 wrote: ↑12 Jan 2020, 14:19 Well I unplugged my TCV electrically, which should directly link the red and yellow vacuum hoses. Now I get progressive boost to about 3psi with no spikes at all. So either my new TVS is defective or my original one was defective and I didn't notice it because my wastegate actuator is not adjusted properly...
So I will have to do some searching to see what the spec is for the LPT turbo. Perhaps someone previously replaced the wastegate actuator that was meant for a T5 that is set at 4 psi?
Also, here's the chart for wastegate settings. It is indeed 1.8 PSI. It's the 4th post down in this thread. viewtopic.php?f=5&t=28239









