BMW M340i M440i 540i G series decat | Osprey Type_Plug & Play ECU Kit As the perfect complement to

As the perfect complement to your new filter

and a stand-alone AFR gauge is next to useless when accelerating hard as your concentration is likely to be (and should be

robust design

whilst the dual-entry MMR Performance cotton gauze air filter works effectively to provide a marked improvement to induction noise

BMW M340i M440i 540i G series decat | Osprey Type_Plug & Play ECU Kit As the perfect complement toA high flow decat downpipe for G series BMW models. These units are heatshielded to decrease engine bay temps and improve the overall power output and engine tone. These are made from stainless steel so the will last a lifetime and they measure 4. 5" in diameter.