Hi folks I have a map on thirsday but im not convinced my up pipe and downpipe are on tight.

I just dont want to go for a map and they be loose.

Could you please advise the easiest way to tell if the up pipe/downpipe from turbo have leak

If so would I lose a lot of bhp at map?
LEGENDS!
cheers folks!!!!!!!

 

If you can see lots of carbon around the joints, then you have a leak. Had a remap and was leaking from turbo to downpipe cost me almost 30bhp. Check or take to be check befor the map.

 

You should be able to hear it blowing with the bonnet up.

Tony

 

Depends how bad of a leak, i could not hear mine.

 

cheers lads I shall have a listen......I have installed decat up pipe and down pipe- does sound a bit blowy tbh. Wasnt sure if this was down to decat though.
Just dont want to go to map and waste money if you know what i mean....map is on thursday and im working till then.
Im gonna have to formulate a plan me thinks!

 

There's no easy way to know, unless its a very bad blow.
Look for soot marks(tricky) or have a sniff around the turbo area - a rich mix from a cold start is quite obvious to smell.
Mapping may show an unstable idle which can be caused by an up-pipe leak.

nick

 

Bung the tail-pipe, this will put a greater pressure on the joints.... Obviously, not a perfect seal or it will "choke".

HTH

dunx

 

bung the tail pipe- as in put my bung in or completely block the tail pipe?
If it chokes then ok - if still running a leak?
Would it do any any harm to engine testing this method?
Cant see any soot marks lads but can smell exhaust from engine bay
Surely if there was a leak on a cold morning start if I open the bonnet ill see fumes rise from engine bay if leak?

 

Unless you've got a smoking engine, you won't see anything. The leaking gas flow will be very small but if it smells "rich" around the turbo area on a cold start then I'd look for a leak.

 

When I fitted my downpipe, it started to blow after a little while, if you look close, you can see the soot marks of the edge of the turbo/downpipe flange





and on the right hand side here



Basically, your lookng for black soot around the area where they join.

 

Like i said look for carbon. Mine was leaking in the same place as above

 

Just re-new both gaskets anyway; peace of mind and all that.

 

cheers lads- thats i renewed the up pipe gasket but not down pipe gasket ................Ill take the i/c off at some point and look for black soot - cheers!!!

 

Id use a sniffer that will tell you :-)

 

a sniffer? lol