Make Your E92 M3 Sound Better For ALMOST FREE! - Stock Muffler Mod BEFORE/AFTER SOUNDS

[@Anders_HeymSR30]

Normally the exhaust mod is done by replacing the perforated tubes (2 IMHO is ideal) but leaving the sound deadening material in place, as it leads to a more hollow sound without. But excellent mod!

[@iysisrose]

So put the fiber glass filling back in before welding ???

[@fredlachy]

@@iysisrose Yes

[@iysisrose]

So dont put the fiber glass filling back in before welding ???