king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
Another dummy question from the king_panther ! :ROFLMAO:

Can someone explain to me what exactly 'cat-back' & 'decat' etc all mean ?

Is one better than the other ? Price ? Reliability ?
 

bradc

1 AYC Bar
Location
New Zealand
First Name
Brad
Drive
Facelift Manual 400hp VR-4 Legnum
a decat removes the catalytic converter

a catback exhaust is from the catalytic converter to the back of the car
 
G

Guest

Unregistered
as brad said, a cat-back is the entire exhaust from the cat converter, to the rear muffler.

a de-cat is a piece of pipe with flanges at both ends that takes place of the cat converter
 

king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
Thanks guys for the explanations.

So is one better than the other ? What are people running on their cars ?

If you run de-cat, that means there's no catalytic converter ? What effect does that have on the car ?
 
G

Guest

Unregistered
Running without a cat is illegal so is up to u if u want to do, but u should see some slight gains as the less on the exhaust to restrict the flow the better. So for example u will see some race cars with exhausts coming out the sides, they have no cat or resinator or mufflers.
 

king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
Can any workshop replace the hosing underneath with piping ?

I do wish to replace all the hosing with hard piping. Does it need to be a certain millimetre diameter ?
 
G

Guest

Unregistered
are you refering to the intercooler piping? i'm pretty sure its all 2.5", or 63mm piping.

an exhaust place should be able to do it for you, also alot of the performance workshops can do it as well.
 

king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
Yes I intend on replacing the intercooler piping, but also the hosing on the underside of the car...
 

king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
There's a small section, about 15-20cm, of hosing underneath the car towards the front..the existing piping under there looks a little worse for wear too..

Or is that classified as intercooler hosing still ?

Once I get a camera handy I could take a shot..

I told you all I'm a dumbarse at this stuff ! :ROFLMAO:
 
G

Guest

Unregistered
there is the intercooler outlet hose there, and the bottom radiator hose too...
either way, it can be replaced with a hard pipe.
 

hawks

Leaving Skid Marks
Location
NSW
First Name
Mark
Drive
Sold my 1998 Legnum VR4 Type S
Yep Decat = big no-no in NSW.

You will be decatted by the EPA if they catch you (if you know what I mean wink-wink snigger :p)
 

king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
Thanks Mitch now I know better !

& Mark, no I had no intention on 'de-catting' my car, as I had no idea what it even bloody meant until now hehe !
 

bradc

1 AYC Bar
Location
New Zealand
First Name
Brad
Drive
Facelift Manual 400hp VR-4 Legnum
it's still legal here in NZ, hence my car (and most other VR-4's) are putting out a nice mix of NO, CO and CO2
 

gilly

Leaving Skid Marks
Premium Member
Location
SA
First Name
Simon
Drive
2000 Legnum VR4 Type S
I think the hosing he is talking about could be the exhaust flex pipe?
 

king_panther

Gettin' tanked
Location
New South Wales
First Name
Brad
Drive
2012 VW Caddy 1.6TDI 7-Speed DSG. Still crappy DSG.....
Yea I'm not too sure what exactly it is... but I see hosing .. it's pretty much in line with the front wheels in the middle of underneath the car where the piping goes back to the exhaust....

In fact looking at the piping it looks pretty crap too...
 
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