I just got my MSP back from the dealer after replacing the exhaust manifold and the turbo. The car now surges noticeably when accelerating, especially in third gear from around 2800 rpm on up. It surges several times not just once the turbo spools . The clutch is not slipping. Any thoughts? Could the dealer have flashed the car after the turbo change and if so is there a sticker under the hood that indicates this?
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