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

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Old 08-15-2014, 06:01 AM   #1
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Default TT serious boost problems. Help! (Videos)

Hey guys, I'm having some pretty bad boost issues and thought I'd try here first before throwing a ton of cash for diagnostic fees etc. I just replaced the turbo inlet pipe because it was collapsing under boost but I'm still having some issues. Under accelleration once boost is built it has a lot of stuttering/popping above about 15 psi and then kicks into limp mode until you let off and completely spool down. Also boost will build up to 23-25 psi very frequently, which is very scary for a motor with 190,000 miles (tuned to 18). I'm not too familiar with the turbo systems in these cars and haven't seen anything online that really matches up with my current problems. Could it be a wastegate or n75 isuue? Any help would be GREATLY appreciated. I just bought a FR-S and really need to get this car up for sale. Thanks!
Hopefully you can kind of tell what's going on in these.
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Old 08-20-2014, 07:10 AM   #2
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Bump, anyone?
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Old 09-10-2014, 02:42 AM   #3
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How's your MAF? Pretty old?
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Old 09-10-2014, 02:42 AM
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