Originally Posted by Abbey M/S
Sounds like it has either a Crank angle sensor problem or a small air leak , it never did that when we tuned the car for Mike to original owner.
There again your going over to Motec so your tuner will be able to sort the problem wont he.
No real problem with the shuffles at part throttle thou.
i've fitted an OEM airbox with Blitz air filter and the car don't shuffle anymore... not only the noise has disappeared but boost oscillation has disappered too... car runs like a dream now...