Sometimes when drive by down the motorway and put my foot down to about half throttle and get to around 1 bar of boost it will start to fluctuate. Dropping to around 0.5 bar then straight up to 1 bar then down and up again until I move my foot on the accelerator. Any ideas skoda gurus?

Thanks in advance for your help

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Have you scanned it? Usual suspects would be temp sensor, maf, n75, MAP sensor, air leak/split pipes. Any other anomalies or symptoms? Noises, misfires, mpg etc

Is it a genuine temp sensor? How long has it been in? N75 faults are rare if the right one is fitted but not impossible. Try get a scan, check pipework for starters.

A lot of stuff around on this topic at the moment, must be something in the air