Thread: Custom Exhaust
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      02-10-2008, 07:58 AM   #1
Scott_in_AZ
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Drives: '06 330i Sprt
Join Date: Jan 2008
Location: Gilbert, AZ

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Custom Exhaust
Has anyone installed a custom exhaust with a high flow cat, larger piping and an aftermarket exhaust?

What diameter piping is stock? What diameter is your custom?
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