Turbo outlet question

[Ph1lly87]

Why is the coupling off the outlet of the turbo to the pipe reduced in side. Is it a restricter or something or does it regulate back pressure from the turbo?

[RAPTURE]

Good question because the Forge pipe has no such restriction.  I would like to know this too.

[coskev]

Pretty sure if you look into the turbo the diameter is the same size as the restriction you think you have!

So it's not a restriction

[sepulchrave]

Haha, 'restriction' is the most poorly understood word in tuning, manufacturers do not 'restrict' their engines because to do so would reduce fuel efficiency and increase emissions.

[RAPTURE]

That is true there is no restriction as such on the original pipe.  But then why is the Forge one totally open at the end and does this effect anything?. :

 

http://www.forgemotorsport.co.uk/Fluorosilicone_Turbo_Hose_for_SEAT_Ibiza_130_Diesel_and_Skoda_Fabia_VRS--product--274.html

[Ph1lly87]

I've binned it off now just put 60mm silicone hose over the top. Just intreeged me is all

[Ph1lly87]

Haha, 'restriction' is the most poorly understood word in tuning, manufacturers do not 'restrict' their engines because to do so would reduce fuel efficiency and increase emissions.

You've misunderstood me mate. I ment a restriction on the air flowing through it as if to keep a certain amount of back pressure to the turbo or something. Coskev was right anyway