Ford focus ST MK3 changed spark plugs and oil ready for dyno run

we are getting ready for dyno run and new back box stay tunned
hopefully, big power gains and one of the loudest and cheapest ford focus exhaust ever put on a focus
next video will be back box delete
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[@shammon1]

For those who don't know the oil filter on the Mk3 Focus ST can come loose! you have to tighten it right up more then normal.