Quote:
Originally Posted by weidake
If you are after more volume I say just do them both.
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*Speculation here* but I'm assuming that the second resonator has a merge of some sort as both 3 cylinder banks need to be merged at some point and on F8X and F97/8 it happens in the resonator - so just check that when you remove the second one, and be ready to weld in an H or X if needed. I only say this because on S55, not merging the pulses results in an even bigger doo-doo sound than stock... not advisable.
I think deleting the secondary cats will have the biggest impact on volume. There's no sensors on secondary cats on F8X or F97/8, so I assume there's no sensors on G8X.