Hi all.

Fitted a new turbo to my Superb 1.9tdi AWX 130 and its down on power compared to the previous turbo before it let go. The car preforms like a 110 bhp and its very lacking below 2000rpm. The VAG COM isnt showing any errors.Its very like the MAF on the way out but when I plugged out the MAF and it was worse.The turbo vane actuator moves the full amount when the engine is stopped.Checked all the vacuum pipes for leaks and the EGR valve,inlet manifold and intake pipes were cleaned about 3 weeks ago.

Any ideas anyone.

Forgot to mention I fitted a decat pipe while I was doing the Turbo job.

Will this make a difference ???

After much searching and testing with VAG-COM I discovered what was wrong with the new turbo. The vane travel stop was loose and had reduced the travel of the vanes so they were open to far for the lower revs.

I adjusted the stop and hey presto that car has its power back again.