Forge Vented Diverter Valve, 08-10 Cobalt SS / HHR SS / Cadillac / Regal 2.0 Turbo Engines
Model Number: 243191-VENTED
The OEM diverter is mounted on the turbo, and is built with a rubber seal, and a spring. Once vacuum from the intake manifold pulls on the diverter, the valve will open and release air from the turbo. Over time, the rubber seal becomes brittle and wont seal as well. The spring can become weaker as well, which will cause the diverter to not seal as well, and you'll loose boost pressure. Especially at higher boost pressures!
This is the fix for this. This made from scratch aluminum diverter is made in Great Britain, and is made to handle high boost pressures. It has brand new seals, aluminum piston and has variable springs for different boost pressures. This will hold your higher boost pressures and help restore some of the boost pressure that may have been leaking out.
This diverter is different than the standard one Forge Diverter valve, because it does not release compressed air back to the turbo. This valve is a vented style that releases pressurized air to atmosphere. This will cause a cool whoosh noise, however, because GM cars are mass air flow sensor cars, air is metered by the air flow sensor, and there is supposed to be no release of air after the meter. So, if you install this vented valve on a mass air flow sensor car, the car will run rich after each time the valve opens. The best way to get around this, is stick with a non vented valve if you dont care about sound, or if you want the whoosh noise its best to get a tune installed on your pcm that can accomodate for a vented atmosphere valve. Most tuners can cut back on some of the fuel after each shift to reduce the effect of having a vented diverter valve and power loss after shifts.
This Forge diverter valve fits the following vehicles:
2005-2010 Cobalt Turbo
2008-2010 Chevrolet HHR Turbo
2.0 Buick Regal Turbo
2008-2010 Pontiac Solstice
2008-2010 Saturn Sky Redline
Cadillac CTS/CT6/XT4/ATS with 2.0 turbo engine