Regardless of the car being stock or tuned, the stock diverter valves start leaking with age, the rubber diaphragm inside ends up tearing and it does not equalise and seal correctly leading to a bit of boost being lost back into the recirc system.
its a piece of mind mod as well performance when you turn up the taps later on...
its a piece of mind mod as well performance when you turn up the taps later on...
I had numerous issues with DV's on other cars that I modded. Didn't want this to happen on my 335. Hence this mod. Didn't have a single day of DV related issues with these suckers on.