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can any help my mate has a s3 99t 70000 when he trys to move off the car kangaroos and the car does not want to go the esp light come he has it on the computer they said it was the maf so i change it and it made no differnce to the car he took it some were else they say its the ecu the computer says its the biometric pressure low signal and there was an nother one that relate to the ecu but dont want to buy ecu if its not that they say its the map sensor mods its ad is revo tec and induction kit

have you checked the diverter valve in the intake manifold? The reason I say this is because we had similar symptoms on our RS4 and it turned out to be 1 of the diverter valves was knackered. cost 25 quid to replace with S3 valves..... worth a look.

The diverter valve failure wont bring up any fault codes, it didnt on the RS4.

see how you get on, let me know what it is please:)