TT (Mk1) Discussion Discussion forum for the Mk1 Audi TT Coupe & Roadster produced from 2000-2006

intermittent boost and sputtering please help.

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Old Oct 27, 2016 | 01:50 AM
  #1  
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Default intermittent boost and sputtering please help.

Hi guys, I've only had this audi(first one) for a few months and love it but I'm having an issue and would appreciate any info you could share.

when i first got it there were no issues and it drove fine. but over the last few weeks its gradually sputtered more and more after it gets into boost and now its wont boost over 15psi AFTER its warmed up. it was boosting up to 19 to 20psi consistently.

once in a while it will start to boost and then just drop right off and the boost is just gone till i shift to the next gear or let off the gas and then give it gas again.

this is a 2002 tt quattro(awd) it has an after market exhaust, tune and coil overs. dont really know much more about it than that.

thank you for any help.
brian
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Old Nov 2, 2016 | 09:55 AM
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If it were stock, I would say replace your DV. Since it is tuned, not even sure you have a DV or BOV. Need to figure that out first.
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Old Nov 2, 2016 | 06:30 PM
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Could be a massive air leak in one of the air intake lines. Check rubber to metal pipe connections as well as tears in the rubber lines.
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Old Nov 3, 2016 | 01:59 AM
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thinks guys, both suggestions i was thinking on looking into.

thank you
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Old Nov 3, 2016 | 09:48 AM
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My first step is always VCDS codes.
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