Subaru Impreza WRX STI Forums: - View Single Post - GR Hatch: Don's 08 STI. STI Hatchback/Wagon or bust!
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Old 07-20-15, 09:42 PM  
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Default Re: Don's 08 STI. STI Hatchback/Wagon or bust!

Fixing vacuum leaks is a very tedious process. I had a/f learning 1 as high as 20%. I proceeded to clamp down all the vacuum ports on the intake manifold and found another leak at the vacuum hose to the bypass valve. Right now, it's at 14%, plugging up the leak at the bypass valve dropped it down to around 8%. So many vacuum leaks!

Last edited by STIGR-Wagon-Dad; 07-21-15 at 12:33 PM.
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