2006-2013 BMW E90 E91 323 325 328 330 Slip-On N51/N52 Exhaust Tips - Burned Blue (Pair) alfa-romeo-stelvio-2017--esr3920511 For those using the Stage1

For those using the Stage1 in conjunction with an aftermarket flash map normally

It installs between your car’s sensors and ECU and improves performance by controlling boost and related parameters through these connections

Fuel economy during normal driving is unchanged and it's compatible with all driving modes including towing

5" in diameter and 1

Tightens chassis

2006-2013 BMW E90 E91 323 325 328 330 Slip-On N51/N52 Exhaust Tips - Burned Blue (Pair) alfa-romeo-stelvio-2017--esr3920511 For those using the Stage1The BMS E chassis slip on exhaust tips are the perfect choice for dressing up your factory exhaust outlets. Made from stainless steel these tips are sure to turn heads. Specially equipped with factory like pressure clips making them go on easily and stay in place just like the factory tips. No ugly screws or clamps for a factory appearance. Sold in Pairs. Not for use with M Performance exhaust systems. Does not fit any F chassis vehicles or other E