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I did quite a lot of reading on the xpipe mod last week. Have any readers done this mod to their S4s?

HYFR had the Supersprint centre resonator delete X pipe on his B8 RS5 iirc. Supersprint do a similar X pipe resonator delete for the B8 S4. There must be similar manufacturers offering similar, plus MRC offer a cut-and-weld service too (although not so easy to return-to-stock when you sell)

Was thinking about an Xpipe as stock is too quiet.