Engine upgrade for V8 Supercar new kids in Perth

An engine upgrade for the AMG Mercedes entries in the V8 Supercars will be in the vehicles for this weekend's racing in Perth.
IRWIN Racing's Lee Holdsworth says the addition of more grunt is a key to the power-hungry Western Australian circuit.
About this video
Duration 01:51
Series Supercars
Tags 2013, engine, irwin, supercars, v8

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