Hi guys my golf is misfiring at around 2500 rpm
Have tried
new maf
New plugs
Different coils
Different ignition amp
Checked for vacuum leaks
Changed inlet manifold and re-aligned with vag-com
Different fuel pump
New fuel filter
New o2 sensor

No codes are showing up on vagcom, everything looks good on the measuring blocks

The car backfires badly and just bogs when full throttle.

I have been reading on the forums that the s pipe going to the pcv valve is a common issue on the agu leading to the same symptoms. I have removed and checked the piping but it all looks okay?

Any help is greatly appreciated!


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