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HFC High Flow Cats
Does anybody make a bolt-on HFC for an E9x NA engine??
I understand weld-on universal HFC's are always an option... but would much prefer bolt-on.
In the past, I always felt HFC's were the best power/$$ mod.
Magnaflow lists direct fit catalytic converters - but they appear to be just a stock replacement.
Note: Just switched over from Audi last weekend and picked up an '07 328i - really looking forward to tinkering with this thing!!!
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