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What causes boost to be pegged at 50%?
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Posted by TomL (more from TomL) on Tue, 29 May 2018 13:35:02 Share Post by Email
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Hi All.. see attached video, but the upshot is that my boost needle gets to 50% fast, and regardless of wide open throttle / rpms approaching redline, it never budges past 50% on the yellow section anymore. it used to. I used to be thrown back into my seat and now it's uninspired.

Notes: I am at 180,000 miles on the original Garret turbo, and I have a new TD04 in a box on my doorstep... so hoping that it is more or less caused by a worn out turbo but to be honest, i have little knowledge (if that isn't obvious by now) of turbo workings, so is "worn out" even a thing?

I did 'check' my vac hoses visually yesterday (they are silicone, replaced about 5 years ago) and seems like one or 2 of them are loose on their respective nipples, but not cracked, split.... change them anyway? (if so, please remind me of ID/ OD/ and how many there are to replace ? i easily see the 2 going into the TB but are there others that are the culprit here i'm not seeing?

Thanks.
TomL Portland, OR

posted by 24.22.84...

See Video Here

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