First car newer than 1987, First Turbo. Advice?

[-vdub-]

pictures of the setup would do us all wonders trying to figure it out. as fubar said, it may be something that is blatantly obvious to one of us

[Dela-Quitii]

here's a couple pics for starters. but I'm not too sure what I'm looking for, reading up on the turbo system in my bentley now.

[Dela-Quitii]

Ok. poor quality for video, but I tried to catch some tach action for more reference. I'm sure you can tell when I'm getting on it.

Whistle While you Spool

[tom5191]

That sounds like it's your turbo spooling.

[Dela-Quitii]

Originally Posted by tom5191

That sounds like it's your turbo spooling.

sure.. but any ideas if and what would be leaking?

[tom5191]

Most likely your turbo inlet or intercooler piping. I'd start tightening those first. Make sure that plug on the inlet is tightened down

[Dela-Quitii]

Well I haven't found any leaks in the turbo yet (which motivation and proper conditions to do so are hard to find in alaska sometimes), but Thanks to VCDS (vag com) I know I've got about 14psi boost at idle and have gotten up to 27psi boost under load. Considering I have an APR kit in their, what are yall's thoughts?

[2001Jettagls]

14psi at idle ?.?.?.?.?.

I think your not reading the gauge correctly.

14 psi is close to atmospheric pressure. You should be seeing vacuum at idle.

But if your reading 27 psi under load, you do have a pressure increase of 13 psi.

That means your turbo is creating 13 psi of boost. That sounds about right.

[Dela-Quitii]

Originally Posted by 2001Jettagls

14psi at idle ?.?.?.?.?.

I think your not reading the gauge correctly.

14 psi is close to atmospheric pressure. You should be seeing vacuum at idle.

But if your reading 27 psi under load, you do have a pressure increase of 13 psi.

That means your turbo is creating 13 psi of boost. That sounds about right.

Pretty sure I got it right. Been using VCDS (vag com) for my guage. At idle it'll read 990/980 mBar for boost pressure. according to my phone, translates to 14psi. Max mBar I seen was 1840, 27psi.. But that's how you figure the boost? its the difference from idle to under load? Not just what the guage (computer) says straight up?

[05GTI1.8T]

get yourself an actual boost gauge hook it in and see what it says. at idle on these cars normal pressure readings will be -20 vaccum. when you give it throttle the needle will rise above 0 and go positive into psi which stock on the 1.8t with the k03 is 18psi but with my buddys apr stage 3 setup on his gti runs at about 25-26 peak psi and holds at around 24-25.

i looked at the vid also the car sounds normal to me you should take another video under the hood at idle most of the people on here would know what to listen for if in fact you had a vaccum leak.

[jessabug]

Stock boost of 18psi? First I've heard that. Mine is 11psi with the KO3s on my 20th.

[Dela-Quitii]

Originally Posted by jessabug

Stock boost of 18psi? First I've heard that. Mine is 11psi with the KO3s on my 20th.

no, not stock. APR stage 3 kit.

[jessabug]

Originally Posted by 05GTI1.8T

which stock on the 1.8t with the k03 is 18psi

I was referring to this bit here.

[Dela-Quitii]

I believe I finally found it. A pipe on the passenger side, seeming to lead back up to the head on the forward side of the engine. A coupler appears to be breaking a part, and has the look of exhaust leaks I've seen in your standard exhaust pipe (muffler.) pic soon.

[Dela-Quitii]

ok. there's a picture. check above post for description.