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Thanks.
So unmerged pipes will sound bad, even if equal length?
I'll be keeping secondary CATs for emission checks as I'm going decat DPs but will look to replace OE centre box / H pipe with two separate mufflers before adding the equalizing length.
Just considering options for rear box.
I have an M2 competition by the way, so i need to get it on a ramp and measure lengths accurately.
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