dead spot when i rev the car

[RoadKill]

I have had boost cut on my car for the last 2 years and still not got it sorted out , its f**King doing me in now as the car now has a dead spot when you rev it 1.5k and it dies then it picks back up then it dies as soon as it hits 1.5k but it dont do it all the time , some one in kent that nows some were i can take it as audi will not tuch it

the cars has
new air flow meeter + plug
new N96
new throttle persishon switch + plug
new N80
new knock sensors

ecu has no codes loged

if i cant sort this the car will get brockon for parts , had a full respay last year two

[RoadKill]

been dicking about with the car , took the plugs out and they were verey cleen , think my fuel pump by be dieing

[mcandmar]

What happens when you try to go above and hold say 2000rpms or 3000rpms? Is your problem just at 1500rpms or can you not drive it at all?

[RoadKill]

it will rev past the 1.5k if you put ya foot down but fills like its holding back

[S2central.net]

Maybe something like clagged up fuel filter or dying fuel pump.... or bad fuel pressure regulator... Doesn't it throw up any fault codes ?

[RoadKill]

nop no codes its got new fuel filter

[AUDIS2avant]

if the plugs are clean then it doesent get any fuel, so this is the reason for setting out.
My car had this until i changen the mfts sensor, this apparently controls the mixture in the wrong way(lean´s out) if it´s broken
And if the car start´s up easy, then it´s not a timing issue either.
So would go after mfts, maf and lambda and maybe new fuel pump

[RoadKill]

new fuel pump it is