17705 - Pressure Drop between Turbo and Throttle Valve help needed

[RS6]

Keep getting this one fault code show up

clear it comes back

All thats been changed since the remap is a yellow spring in dump valve, new maf sensor (not geniune) and Badger 5 TIP everything looks tight and can't hear any boost leaks, had TIP checked no probs with it, pretty sure no split pipes anywhere what do you think i should try had a look under the engine cover all pipes are looking fine

do i need a new N75 valve?
new maf?
new hoses?

With the badger 5tip does everything connect up one way only? like the forge TIP i didn't fit it thats the only thing

 

[csd_19]

Have you checked all the connections around the DV? I assume it was serviced when the yellow spring was fitted - just thinking it may be sticking open slightly.

 

[Pyro]

New maf must be genuine James you should know this

 

[RS6]

yeah checked around the dump valve all looks done up tight at amd they just changed the spring don't think they serviced it

everything looks done up very tight, took the engine cover off can't see any cracks in pipes

would the small pipes that come off the badger5 tip would they cause a leak they need to be trimmed etc? wondering if the garage didn't trim them

any of these bits cause the leak if not done up right?

would this non geniune maf cause the fault you think

 

[Pyro]

Yes

 

[RS6]

right can i exchange my new 2nd hand maf of 2 weeks or just have keep spending £'s for a new one at seat

 

[Pyro]

Send it back and get genuine Bosch from GSF contact fl@pper on here for a price if you like

 

[csd_19]

Yes

No.... TIP is before the turbo, leak is between turbo and TB.

ECU is seeing a boost leak somewhere so the engine must be running slightly rich. If the connections on the tip were loose you'd be sucking in air and turning the mixture lean.

Could be a leaking intercooler, pinhole leak style.

The DV is connected to the tip yes, but if its working and seating properly that leak path would be closed under boost.

Do you have your DV reversed or in normal orientation?

A faulty maf won't give this code either... just unplug it for the moment to take it out of the equation.

 

[Pyro]

No.... TIP is before the turbo, leak is between turbo and TB.

ECU is seeing a boost leak somewhere so the engine must be running slightly rich. If the connections on the tip were loose you'd be sucking in air and turning the mixture lean.

Could be a leaking intercooler, pinhole leak style.

The DV is connected to the tip yes, but if its working and seating properly that leak path would be closed under boost.

Do you have your DV reversed or in normal orientation?

A faulty maf won't give this code either... just unplug it for the moment to take it out of the equation.

My yes was aimed the maf post was edited since my post I do believe

 

[Pyro]

Ask sam Bryant about the code it can come up for a cheep no genuine maf....

 

[RS6]

No.... TIP is before the turbo, leak is between turbo and TB.

ECU is seeing a boost leak somewhere so the engine must be running slightly rich. If the connections on the tip were loose you'd be sucking in air and turning the mixture lean.

Could be a leaking intercooler, pinhole leak style.

The DV is connected to the tip yes, but if its working and seating properly that leak path would be closed under boost.

Do you have your DV reversed or in normal orientation?

A faulty maf won't give this code either... just unplug it for the moment to take it out of the equation.

The Dump Valve is forge 007p normal orientation do you think the problem is not related to the MAF then?

I suppose i could recheck the dump valve pipe on the top, pretty sure its on tight but may be its split due to over tighting?

the intercooler is also forge thats fairly new im sure its fitted correcty and tightened accordingly

i suppose its worth getting a geniune maf next

 

[RS6]

also had a new geniune Lambda sensor pre cat if that makes any difference

 

[Pyro]

I vote maf

New lamber won't cause a pressure code

 

[csd_19]

My yes was aimed the maf post was edited since my post I do believe

Not a problem fella

 

[RS6]

Well thanks to this maf, its now thrown the emissions light back on as i've already had the pre-cat sensor changed i thought this was a bit strange so plugged the vagcom-lite in and its still only reading 1 fault the pressure drop between turbo and throttle valve no other faults listed so cleared it and the emissions light has gone off i think this confirms it can only be my maf playing silly games with my car ecu

 

[hardcore4]

i have this fault too mate but cant seem to find out where the hell its loosing boost checked all my pipes etc and they seem ok. Mine doesnt bring cel light on though.

Off topic how much is a badger 5 tip and have you noticed much difference?

 

[RS6]

yeah its anoying the hell out of me tbh, i have no leaks etc pretty sure its this maf now

yeah the TIP was something like 3inch TIP, black - £162 Polished +£7.50

Seems to make it go better! when the cars working correctly! lol

 

[csd_19]

blah blah... just unplug it for the moment to take it out of the equation.

Have you tried running the car with it unplugged yet??

 

[Pyro]

If it's MAF James I'm gunna post you my shoe so you kiss it

Off topic should have my reducer tomoz so I'll slap the new filter on

 

[RS6]

lol i just want to be sure lol, already wasted what £88 on this maf can't afford a new one till the end of the month

sam i want to see pics of that cone filter fitted tomorrow then! you will love it

not tried disconnecting it yet worth a shot i suppose won't do any damage no?