GTI 5: Turbo - Intercooler Pipe Internals.

[9 iron]

Hi guys,

can anyone explain what the gold thing attached to this pipe at the top end (end that would attach to turbo) is?

looks like a thermostat of some sort... that sits inside the pipe????

http://cgi.ebay.com.au/VW-Golf-V-GTI-Druckrohr-Ladeluft-1K0145762M_W0QQitemZ360238103625QQcmdZViewItemQQptZAutoteile_Zubeh%C3%B6r?hash=item53dfdd3c49

can we remove this for better air flow?

[Greg Roles]

I don't know the GTI turbo exactly, but that looks like it could be the actual turbo body housing and the inlet compressor "faceplate"?

[Guy_H]

That is actually a noise suppressor or "muffler" found mainly in the K03 variants.

Oettinger (and some other manufacturers) have a higher flowing replacement.

From what I understand, it does not make any direct HP, but does in crease torque through the rev range!

There are some pics in our 2006 K04 swap in this gallery:

http://www.ozaudi.com/projectGOLF/Gallery/

[Greg Roles]

Wow there you go! I'd be having at that for sure.

[9 iron]

That is actually a noise suppressor or "muffler" found mainly in the K03 variants.

Oettinger (and some other manufacturers) have a higher flowing replacement.

From what I understand, it does not make any direct HP, but does in crease torque through the rev range!

There are some pics in our 2006 K04 swap in this gallery:

http://www.ozaudi.com/projectGOLF/Gallery/

Thanks Guy... so leave it? i would have thought it should go asap?

[Guy_H]

There is more flow, but not huge gains.

Have to balance it out on cost vs performance.

The Oettinger part is $400 (includes hose) probably good if you already have:

Software
Exhaust
Fuel pump
Intercooler
Intake

then I would do this if you still have the K03!