Over Boosting Problems

[R34P3R]

Hey guys This question isnt about a skyline but you guys know alot more than most other forums do

I just bought a 180sx recently and I've been having so much trouble trying to get the boost stable. Car came with a profec b spec 2 which ive tried tuning. I've changed the vacuum line to the actuator incase it was cracked and put a nipple into my cooler. After all this it still spikes so I bought a gfb manual bleed valve and it still have the same problem. It spikes upto 1.8bar on the stock t25.

Car is running a sr20, fmic, pod and ebc from what I can see. Previous owner barely knows whats is what. What else can I check and change to maybe stop this problem.

[Ben C34]

nipple into cooler sounds weird. Should be coming from as close to turbo outlet as possible.

[R34P3R]

woopsI meant its into the cooler hot pipe. the aftermarket pipe on there didnt have one

[Dose Pipe Sutututu]

Sounds like you've got your lines all mixed up, connect a pressure source straight to your actuator and see if it still spikes