Pressure loss between turbo/throttle body check dv!!

[auq]

I have this coming back quite alot no and its driving me crazy! lol, it hits limp mode and then logs this code, my mapper says could be SAI problem maybe?

does the n75 have anything to do with this error?, as this is the last thing to be changed.

 

[seatcupramad23]

Boost leak mate

 

[rk696]

Or the dv has split if it is the original old bosch one.

 

[adzer]

my mate had this problem, spent 2k on parts and still didnt solve it.

turns out previous owner had it superchipped and it fcuked the original map on the ecu.

if he cruised in 3rd gear the car would feel jerky and lumpy

just thought id let u know so u dont end up going down the same road he did

 

[auq]

Boost leak mate

yeah im thinkin boost leak, gonna get smoke test done asap

 

[auq]

Or the dv has split if it is the original old bosch one.

dump valve Forge 007p with yellow spring

 

[seatcupramad23]

More often than not that code points to boost leak

 

[towcester vag]

what year is car?
if early car clean throttle body and reset
common issue if no boost pipe leaks

 

[MATTCR]

Oh no not this error

I had this on my old 1.8T for the whole time I had it. It boosted fine, and drove fine - ended up just clearing the code whenever it came up and forgot about it.

Its all over the forums, nobody seems to be able to pin point it

 

[traumapat]

Try your old dv if you still have it... if the forge is older than 8 months try servicing it.

 

[seatcupramad23]

Oh no not this error

I had this on my old 1.8T for the whole time I had it. It boosted fine, and drove fine - ended up just clearing the code whenever it came up and forgot about it.

Its all over the forums, nobody seems to be able to pin point it

I had this code 3 times on 2 separate car all turned out to pin hole boost leaks

 

[auq]

ok, ive had a prod around and cant seem to see any boost leaks, it spools upto 22psi no problems, and no surges or pressure loss so i assume boost is good, the fault starts as follows:

Cold start - lots of smoke and smells very eggy (cat smell) i have 100cel race cat with no rear lambda (blanked off)
it then feels very lumpy when upto temp.
following a few mins of driving CEL light comes on and limp mode,
Turn off and on limp mode gone and all is fine, no smoke but still very lumpy, and that code is then logged.

If i clear the DTC codes it will happen all over again as described.
My mapper has removed the cat from the map, and im running custom Stage 2.

Also can i try the OEM dump valve as im on this map or will it be ok?

 

[seatcupramad23]

Oem dv if working fine can handle the boost no problem

 

[towcester vag]

clean throttle body first!!!
then check vacuum pipes under inlet manifold

 

[LEE69]

Is the rear lamba still plugged into the loom?
As it been mapped out too?

 

[auq]

Is the rear lamba still plugged into the loom?
As it been mapped out too?

the rear lambda is still plugged in but tyed inside the plastic box, also im pretty sure its mapped out (will have to double check tho)

Also ive got the oem dv on, getting a bit of surging tho?, ive regreased the 007p and gonna try it tomorrow.

 

[auq]

clean throttle body first!!!
then check vacuum pipes under inlet manifold

Im gonna clean and realign the TB in the morning as its been a while since i last did it, my VAC pipes are all ok from what i can see, cars still boosting to 23psi

 

[auq]

the rear lambda is still plugged in but tyed inside the plastic box, also im pretty sure its mapped out (will have to double check tho)

Lee would the rear lambda be somehow related to the pressure loss fault code?, i rang mapper and he says something regarding the secondry air pump?

 

[johno1404]

my mate had this problem, spent 2k on parts and still didnt solve it.

turns out previous owner had it superchipped and it fcuked the original map on the ecu.

if he cruised in 3rd gear the car would feel jerky and lumpy

just thought id let u know so u dont end up going down the same road he did

was it a ecu remap you mate had done? if so do you know what brand? Or was it a chip soldered direct into the ecu?