MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: AJG09 on August 17, 2015, 07:59:39 pm

Title: 90mm or 70mm pipework?
Post by: AJG09 on August 17, 2015, 07:59:39 pm

Couldn't really find an answer for this anywhere.  :fighting:

Is there any benefit to having 90mm pipework compared to 70mm pipework on an induction kit?

I've seen a thread before saying that if you have 70mm pipework it gives a loud whistle at certain rev ranges whereas the 90mm doesn't?...

What's the general consensus on it?

Title: Re: 90mm or 70mm pipework?
Post by: ROH ECHT on August 17, 2015, 08:37:46 pm

You should address this with a Tuner if you have one...or the one you are considering. Intake pipe volume can cause problems with peak performance and non-adjustable tunes are affected by diameter. I have a 2.75"/70mm and there is no weird whistling caused by the pipe size. I have read that other sizes varying from the tuners recommended size have caused issues.