BMW F82 M4 3" VALVED TURBO BACK PERFORMANCE EXHAUST

Pre-PPF models only. (Requires 2 x BMW gasket - part number 18307851168 - not included). This BMW M3 (F80) Coupe performance exhaust is made in 3"/76.2mm pipework and fits from the turbo backwards (Turbo back system) this exhaust replaces the front pipe, standard catalyst, centre and rear sections. This exhaust includes the primary and secondary de-cat and is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks. EML lights will activate after removing the standard primary O/E catalyst. An ECU Re-map is recommended to correct this problem and stabilise all power increases. Please Note - This performance exhaust retains the use of exhaust valves. When switching drive modes (e.g. Comfort to Sport+ mode) your exhaust tone will continue to swap from quieter to louder tones as before. Requires 2 x BMW gasket - part number 18307851168 - all other relevant gaskets and fittings are supplied.