A line on my boost controller came off, I did one run after it fell off not knowing, looked down at my gauge and my boost spiked to 20PSI instantly. I then instantly let off after hearing a soft "thud" sound, and fuel cut. I don't think I threw a seal because my idle is very smooth, and it accelerates out of boost fine. I'm gonna compression check it today after it cools down and see what it shows. If it reads full compression on all rotors it's healthy?

 

Well I compression checked it. With the button depressed it spikes to 50psi on all rotor faces on both rotors. With the button let out to build pressure it spikes to 112psi for all rotor faces on both rotors. I guess none of the seals are blown.

 

Glad to hear it . How did the line come loose? make sure it is zip tied securely.

 

Stupidly I kept a silicone line that was too large for the barb on the controller. I need to get a new vacuum line that has a smaller diameter. I'm tempted to run an electronic setup.