mk3 golf missfire at 3000rpm

[golf8v]

i have a mk3 gti 8v it has a problem with a missfire at 3000rpm, if i put it to full thottle it has no pull, but if i feed power on slowly it is fine, i have put new coil leads,plugs and even a new lamba sensor and set timing up on vas machine help me please as its more underpowered then normal thanks

[forsh]

MAF???

[golf8v]

swapped that too

[forsh]

checked it on vagcom if there is any errors?

[golf8v]

been checked had upper limit not reached for 02 sensor new one fitted and had timing set up

[forsh]

that me stuck then,im sure someone else knows whats happening or had a simalar problem on here

good luck though

[golf8v]

cheers anyway

[Wayne]

Clean the throttle body out.

[golf8v]

i will give it a go this morning

[golf8v]

got new thottle body and cleaned fitted no change