Compressor surge occurs when you suddenly lift off the gas pedal and the throttle plate closes. But when there’s compressor surge, it can create headaches, mess with performance and even cause damage to your car. Every component of a turbo system needs to work together. It just so happens it makes a loud sound that gets everyone’s attention! But the noise it makes shouldn’t be what you’re most concerned about you have to make sure you have the right valve for your ride. The underlying objective of a blow-off valve (BOV) is to protect the turbo against damage while ensuring smooth and reliable drivability.

Could that be why? That the BOV wasn't opening at all? But that wouldn't make my engine run THAT boggy right?ĭo you have ANY idea what could be wrong? Any input is appreciated and if you need any further clarifications, let me know! So, I got an allen key and loosened it from the top so that it was pushable. In the 2nd photo, you can see that I detached the 'factory BOV return pipe' and 'plumb back hose' and plugged both of them (as the setup manual showed - they just used a different part instead of my white cap).Īfter I went back to stock, I looked at the Blitz BOV and saw that it was locked shut and couldn't push it down. So, I took off the BOV and went back to stock and it ran perfect again.Īs you can see in 1st photo, I remove the 'factory vacuum line' from the stock BOV and installed a new one, which I ended up connecting to the Blitz BOV. However, I am not sure why that would happen. All this means I was running really rich and that something was up.

However, after I installed it, started the car and the car was very boggy, the engine was not running properly, RPMs kept dropping randomly and I was blowing black smoke out the back. I did everything in that setup manual except using the 'blank off assembly' since I don't actually have their kit. I looked up how to install one and found this: which came close to what I am trying to do. So I imported myself an S15 and I bought a Blitz BOV that came welded onto an elbow joint.

Installing bov on sr20det