Exhaust Questions.

[Dum-Dum]

Hi all, after grafting my old HDi mid-box back-box onto the cabriolet yesterday and finding that it sounded like a tank and was ridiculously restrictive (causing the center section to overheat) I want some advice on what to do for the exhaust.


I want something off the shelf ideally thats not too noisy (apart from at WOT) and thats cheap too.

Anyone got any ideas.

I was contemplating a sportex race tube center section with the standard back box.

[Chris]

On the 6 I had a straight though center and the standard 6 rear box, sounded nicer than the magnex I put on after it too.

[Dum-Dum]

Think Ive worked out why it felt down on power, AIT sensor wasnt (isnt) connected.

The wire isnt long enough so im gonna have to take the manifold off again and make sure the wires are long enough this time.


Induction kit on GTi6 manifold sound fapping epic. Went for a blat earlier (as much of a blat as i could with it feeling like a 1.6) and the inlet manifold was cold so Ive got the filter in the right place for no heat soak.

On the 6 I had a straight though center and the standard 6 rear box, sounded nicer than the magnex I put on after it too.

What was it like noise wise at idle and on the motorway?

[Matt]

Where did you put the filter?

[Dum-Dum]

Ive got an enclosed induction kit and i stuck it where the air box is on a GTi6. Ill get a pic in a min.

[Dum-Dum]

Matt Its the mirror finish cylinder in the bottom pic.

[Matt]

Ahhh it's an enclosed kit, I had mine down there and was scared of water soak, may knock up an enclosed solution to mine though

[Dum-Dum]

Matt the filter is off ebay for sub £20. Its about the same size as Nialls K&N so should flow enough.

I am also scared of water soak but im gonna run some ducting back up and down the side of the rad for a cold air feed. The filter entrance is only a few inches higher than the bottom of the sump

[Matt]

Did it come with all that piping? I currently have a pipercross filter on mine, but it's meant for a hdi lol

[Fozzy]

Where you get the Piping from, i need a T piece as i hate the sound of the mini filter on idle.

[Fozzy]

Just thought of something your bit of hose pipe, the original has a one way valve in it, maybe thats causing your rev problem

[Matt]

Foz it can't be that, I have the valve thingy in mine, still have the rev problem, although mine could be faulty lol

[Niall]

I might try and make a enclosure for my k and n.
On and love the hose pipe. Don't bother with the proper pipe. The check valves pack up and just fill your inlet with oil. I'm fitting a catch tank next month.

[Dum-Dum]

im hopeing to get a catch tank too when i buy all the vac and breather hoses that i need.

Fozzy the hoses were off ebay. Ill sort a link when i get home from work.

And back on topic does anyone have any ideas for my exhaust?

[Scott]

I had a piper exhaust on the S16. Even with the maniflow mani and decat it wasn't too loud just driving normally. On cam however...

[samass]

depends what kind of sound youre looking for, ive been reading into it and centre box muffles the higher pitched noises, and the back box does the lower pitched stuff. im thinking of home made decat and de-centre box for mine, using bits of an old DT exhaust ive got kicking about.
only thing being that the backbox being a cross flow (iirc) its fairly restrictive
if im stating preknown facts, feel free to ignore me , just my two cents

[Jonny b]

I have a full scorpion setup on mine and as anyone that's heard it knows! It sounds awesome it is loud though

[Matt]

I have a straight through middle, made by a pikey, just box cut and slightly larger bit of pipe there, two ends slotted in and welded, with a big bore exhaust. Sounds porno, it's ridiculous really, so loud. Haha.

[Dum-Dum]

Think im gonna leave it till ive got the GTi6 Exhaust manifold and de-cat fitted to see how loud they are before I do anything else.