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Hello guys.

I don't know this may be a good sticky if the replies are good as it will help many others. (project stop a leek)

Since owning my S4 I have been glued to the forum reading as much as I can about the cars.

The bottom line is these cars die quite quick with a boost leek, I have read so much, like peoples cars going bang with new turbos after just 2000 miles.

this scares the cra* out of most people and I can understand why, the cost can be bankrupting.


What I want is to try to make my pre-facelift as safe as I can from the dreaded monster boost leek. So I am trying to put a list together of the things that are needed and what hoses need to be changed for maybe silicone or whatever.

so far I have this

1) A leek tester
2) F hose (silicone?)
3) some say arp by pipe


can people please add to this and advise with links or part numbers what else is needed.


Thank you

Darren

1) A leek tester

Some Welsh dude ... ?

Just joshin' .... get new DV's and a new TBB in addition to the silicon f-hose. Also check, and replace, various other hoses (FPR, boost/vacuum hoses to DV's etc...)

not welsh..possibly a dyslexic angel..

arp by pipe

i say do the lot , all hoses and get new 710 diverters and also check intercooler end caps when fitting the hoses for signs a leaking

Just to add, s4 uses 710A's DV's, the DV's you want are the 710N's. Also, replace the 1 way valves and spider hose.

Good call on the spider-hose HarperD ..... but good luck changing the "evil green" 1-way valve ... it's a reet bastard!

Also change little 1 way valve attached to f hose!

is there a part number list anywhere for these 1 way valves and which ones are they? I constantly get boost problems could be one of these this time

s4woody wrote:from a old post 078133784AE or 035103245A its 1 of these i think..the 1st number is for a green valve..just cant remember what 1's what..

there is 3 of these green valves I think.

so added is spider hose.(there is a new model out?)

vac hoses

any more part numbers?

Darren

ok, is the valve the same in the F hose as the spider valve?

and what is FPR short for.

trying to make a list of safety part numbers..

FPR = fuel pressure regulator

FPR = fuel pressure regulator

is that the pipes that go to the unit... or the actual unit

sounds expensive


Thanks guys

Darren

Nah - just a rubber hose from the back of the intake manifold to the FPR unit - if you've still got the factory fitted hose then it's probably brittle and a bit shagged - easy job to replace for bugger-all cost.

S4TAN wrote:Nah - just a rubber hose from the back of the intake manifold to the FPR unit - if you've still got the factory fitted hose then it's probably brittle and a bit shagged - easy job to replace for bugger-all cost.

Thank you sir.

I have noticed that on other forums some people are using autobahn88 hoses (like samco) http://cgi.ebay.co.uk/Audi-S4-A6-2-7-Tw ... dZViewItem

and have said the quality is quite good, any views?

Darren

Yea i had the whole set on My old s4 when i had my new turbo’s. They are defiantly better than standard, and are great value. When MRC's Doug pressure tested the car there was only 1 leak, which was on the original bi pipe all the autobahnn pipes were fine and have been ever since. Which is good as it is pushing 346bhp on RR. Also my friend has a set on his P1 Scooby and VRS Octavia, all is well with them and they are both remapped!!