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Old 02-27-2009, 03:47 PM   #1
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Default Turbo Hole?

What's this hole for - pressure relief? Just noticed air (intake) coming out of it at idle. There's another one on the bottom but it's not venting.

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Old 02-27-2009, 03:50 PM   #2
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It's purpose is to mount a wastegate; it needs to be plugged with a bolt.
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Old 02-27-2009, 03:50 PM   #3
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Those 2 holes are on my SR20 T25 for the stock WGA mounting. One goes all the way through, put a bolt in it to seal it up.

Edit: Brain wins.
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Old 02-27-2009, 03:56 PM   #4
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Thanks. It's been this way since it was first installed. I wonder why Begi didn't plug it or make mention of it in their manual.
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Old 02-27-2009, 06:26 PM   #5
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Wow, you've been running that way since it was installed?
Your turbo has been working hardddddddd to prduce that 8 psi you've been running. You're gonna notice a difference when you plug that hole.
Use a short bolt and put some sealant on it, but not so much that it gets in the housing, just the threads.
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Old 02-27-2009, 06:46 PM   #6
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and turn your MBC down.
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Old 02-27-2009, 07:08 PM   #7
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With it plugged, it definitely has more go. Of course the boost is up almost 1psi - will have to loosen the MBC up.
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