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Old 10-07-2011, 06:42 AM   #1
icey756
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Default inconsistent boost

I have been noticing that my boost is different according to what gear im in. 1st is about 4 or 5 2nd is 5 to 6 third is 6 and 4th is 7. I have a manual boost controller under the hood. I can really think of anything that would be the problem i guess. I have an aftermarket boost gauge hooked up and i also have the stock one hooked up. Im thinking either a vacuum leak somewhere or it could be where i have the new one hooked up. Idk. I'm open for suggestions and also a picture of how u have ur aftermarket boost gauge hooked up would be superb.
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Old 10-08-2011, 06:39 PM   #2
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It's not uncommon, especially as the turbo ages and spins less freely... Also in lower gears you're often not in gear long enough for the exhaust gases of overcome the turbo's inertia.

Still, I'd go through the usual steps of testing for boost leaks (with an actual tester you'd be surprised how easy leaks are to miss), check timing and check for error codes.
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Old 10-08-2011, 07:57 PM   #3
icey756
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Quote:
Originally Posted by cre View Post
Still, I'd go through the usual steps of testing for boost leaks (with an actual tester you'd be surprised how easy leaks are to miss), check timing and check for error codes.
Leaks from where? Like all my vacuum lines and stuff u mean?
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