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Maf & pre cat sensors should be changed at 150k kms or less if the performance and fuel consumption are not right.
10year old sensors are expected to be out of spec.
If the maf signal is a bit weak, this will underfuel the engine when you set off and the turbo has not spooled up. This also delays the spooling up.
It doesn't happen in other gears because you are not starting from zero speed and idle rpm.
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