Hey all, Bit of a weird one. And I'm thinking it's going to be a leak somewhere. But I'd appreciate a few experienced hints. CA with a T28, 3" exhaust, Apexi cone inlet and Horsham stage 2 chip. Electronic Boost Controller. All of a sudden it's started boosting really late. Hovers around 3-5psi up until like 4.5k-5k, then smashes up to 13+. I've tried working with the duty/gain on the boost controller and it doesn't have an effect on it. It's also had a high idle in places even when the engine is hot. I had the intercooler pipes off the other day to fix a water pipe, but everything went back on tight. Would it reach full boost if it had a leak? Or is this more likely a vacuum leak somewhere else? Thanks in advance.