I recently installed the Forge diverter valve with atmospheric spacer on my GTI and it’s honestly pretty sweet. Translation, my turbo now makes that cool and uber desirable ppppsssshhhhhhtttttt sound every time I shift, and it fully restored my boost numbers. In my case, I installed the replacement diverter because the factory valve (shown below) failed shortly after my car was chipped.
Continue reading after the jump.
Installation was a little tricky because of the tight location of the factory diverter valve and I actually had to bust out my 3/8th inch drive with the flexible ratchet extension to get to one of the bolts. After removing the factory valve I simply attached the replacement valve and ran the necessary vacuum hose to the engine’s correct boost line. They included great directions and all of the necessary hardware for the install. Total install time four hours, but if I did it again it would probably take me an hour.
Here’s an example of what my app sounds like:
So far I’m happy with the unit. Boost is restored and seems to hold stronger, and my turbo lag feels significantly shorter than stock. Forge makes replacement valves for all sorts of makes, so if you need one check em’ out.
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