Go Back   AudiWorld Forums > Audi Models > Audi TT / TT-S / TT-RS > TT (Mk1) Discussion
Sign in using an external account
Register Forgot Password?


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

Welcome to AudiWorld Forums!
Welcome to AudiWorld.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the AudiWorld Forums community today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 08-15-2014, 06:01 AM   #1
AudiWorld Newcomer
Account #: 288536
 
Join Date: Aug 2014
Posts: 2
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.
Cfarris87 is offline   Reply With Quote
Old 08-20-2014, 07:10 AM   #2
AudiWorld Newcomer
Account #: 288536
 
Join Date: Aug 2014
Posts: 2
Default

Bump, anyone?
Cfarris87 is offline   Reply With Quote
Old 09-10-2014, 02:42 AM   #3
AudiWorld Super User
Account #: 94558
 
Join Date: Jul 2005
Posts: 6,608
Default

How's your MAF? Pretty old?
__________________
-signature trimmed out of respect-
TT FAQ VAG-Finder Fotki
roadyTT is offline   Reply With Quote
Old 09-25-2014, 07:06 AM   #4
AudiWorld Senior Member
Account #: 21940
 
Join Date: Jul 2001
Location: Cincinnati, OH
Posts: 1,739
Default

Blowoff or recirc? I tried putting a blowoff on mine so many years ago, but car always went to safe mode because it did not see the air that was blown off. So long ago that I don't remember exactly how it acted, but I had to turn off the car and turn it back on to get it to go to regular boost again.
__________________
Aaron
Cincinnati, OH
2001 TT 225 blk/blk(13.6@98mph w/1.7 60') 3" CB with Flowmaster and H&R Coilovers < SOLD regret
1987 Audi 4000q < SOLD
1992 Passat Wagon aka: the draggin wagon < SOLD
1988 Audi 90 cammed < SOLD
Power5 is offline   Reply With Quote
Old 09-25-2014, 06:45 PM   #5
AudiWorld Member
Account #: 165238
 
iflywoe's Avatar
 
Join Date: Jul 2009
Posts: 387
Default

did you run the lines and see if theres a leak?
__________________
As you walk away from your car after you park, do you look back? if you dont you got the wrong car.....

"If everything seems under control, you're just not going fast enough."
-Mario Andretti
"Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe."
-Einstein
2010 Premium plus, black on black, 6MT, B&O, Tips, Stasis Touring Kit, Stasis ECU Flash, Xcarlink, GPS touchscreen. VMR 708 18' wheels, Lamin-x, APR CARBONIO INTAKE
iflywoe is offline   Reply With Quote
Old Yesterday, 09:23 PM   #6
AudiWorld Newcomer
Account #: 291151
 
Join Date: Sep 2014
Posts: 3
Default Turbo? Leaks? Recirculation valve?

Does the turbo have lots of power still or does it feel gutless (gutless could be bad turbo)? Smoking any (bad turbo, might be able to be rebuilt with factory kit)? Does the car have no power off the line and then hammer hard all of a sudden when boost is high (pressure and vacuum leaks can cause this, use a smoker at very low pressure to find them, and bump up pressure slowly as you fix the leaks)? Does it feel good but drop power at near full boost (could be bad recirculation valve, get the 71 model for cheap or go nuts and get a custom one, but the 71's are more than fine for stage 1)? Any high pitched squealing noises under boost (bad turbo, and the spindle and fins are probably running out and hitting the exhaust housing portion of the turbo)?

Have you had anyone check the car with a vagcom type setup to see if it has triggered any codes, those are extremely helpful and key in your troubleshooting. I bought the Ross-Tech vagcom adapter for $250 so I can consistently monitor my car for problems since I am keeping the car long term.

Let us know
Shomare is offline   Reply With Quote
Old Yesterday, 09:23 PM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 03:57 PM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community