Murph86

iTrader: (2)

Guys, ever since my mate fitted my decat up pipe to my05 i can smell exhaut gas in the car (or i think thats what it is) when its stood still with engine running.

Srange thing is there is no rattling or loss of power so that rules out a loose connection.

I just can't work it out.

Murph86

iTrader: (2)

Bump

Anyone??

joz8968

iTrader: (13)

I reckon there's a tiny leak leak between either:-

- Header/s & head/s
- Headers/crosspipe/elbows
- Turbo & downpipe


...But 'bound' to involve the up-pipe seeing as that is what you changed (and assuming you detected NO fumes BEFORE you changed it).

So between:-

- Headers' collector flange & up-pipe
- Up-pipe & turbo

Murph86

iTrader: (2)

Thats all i could think, i'll get some new gaskets and exhaust putty and do it all again when i get chance.

Thanks bud!

joz8968

iTrader: (13)

Good luck with it!

While you're in there, check all the other joints, etc. using the 'tissue paper' and/or 'your hands' tests...

jasonius

iTrader: (1)

Has it been mapped..?

If not it'll be running VERY rich, hence the smell..

TBH, after decatting what did you expect..? With the engine cold and idling/stationary you will get fumes, it's even worse in the winter on damp days..!

Once warmed up properly, if mapped correctly, it shouldn't be that noticeable..

Murph86

iTrader: (2)

the what tests? im no mechanic so i have no idea what that is?

joz8968

iTrader: (13)

It can be hard to detect/hear small exhaust leaks... so putting a bit of tissue paper over suspected joints will cause it to flutter if there IS a leak.

Without wanting to state the obvious: also simply your hands!... They are quite sensitive to moving air (don't burn yourself though!...)

Murph86

iTrader: (2)

Ah i see, will get under her and give it ago.

Jasonius yeah its been mapped and i no it will smell more wih no cats but i didn' think i'd smell it in the car.

will_wrx

I love the "decat" smell, haha.