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Old 05-09-2011, 09:47 AM   #2 (permalink)
focus1.6uk
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hi owen

I would keep the cat if it has one and ditch both silencers if you can put up with the noise, quite common on turbo diesels to get the turbo to boost earlier in the rev range by reducing back pressure, although on a non turbo 106, it might not make much difference.
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