For sale, I've got a Forge 004 Dual Piston Blow Off Valve w/ 4 springs. Unsure of the mileage, but it's in perfect working condition. Comes with Blue, Green (installed), Red, and Yellow springs. Red Samco hose is not included. This BOV stays closed at idle, and will work perfectly fine in any 1.8T with or without an MAF. You'll just need to block off the other port. Very nice, subtle sound. Looking for $75 shipped.

Sorry for the poor cell phone image quality. The valve is perfect, but could use some cleaning.

 

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Only certain ones are. If they dont' remain closed at idle, they will cause a slew of misfires and rich conditions. With one that closes at idle, the only drawback is that you will run a tad rich in between shifts, but only for a SPLIT second before the ECU re-adapts.....There are plenty of people on other forums with stock or lightly modded 1.8T who have done so successfully.

I ran this on a MAF-less 2.0 GT30R with no issues.....Upgrading to a bigger BOV

 

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SOLD. Thanks!