How safe are catless downpipes for the n54 engine with 60k miles already on it I have an extended warranty just curious what kind of problems if any I would run into all I have now is a AFE Dci and jb4
11' 335d - An so it starts all over again..
08' n54 135i Alpina-AT 107k Miles - SOLD
Engine: JB4 e40/93, AFE DCI, VRSF 5" FMIC V2, VRSF Upper/Lower CP, BMS Tstat Bypass
Exhaust: Active DP, Berk Ceramic Delete