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Description
- Manufactured usung Titanium for a durable light weight item that delivers performance gains.
- This Racing collector system is supplied with provision for the O.E. exhaust sensor mounting points (2).
For: 2019 > UP
Arrow Part Number - 71723MI
Note - This ARROW Racing 2:1 Collector unit is designed to either connect direct to a ARROW Silencer - Maxi Race-Tech #71805 Series or the new SONORA #72505 Series.
Or alternatively, the O.E. silencer system can be retained.
> Technical Note :The BMW Original Equipment Collectors unit has a fixed Exhaust Valve fitted.
When replacing this O.E. unit with an Arrow Racing Collector #71723MI, the exhaust valve will be eliminated.
The BMW On-Board Diagnostic System (EOBD) will display a warning message due to the exhaust valve malfunction [removal]
and the ECU can / will enter a 'Recovery Mode' status.
Therefore, when installing the Arrow Collector, it is strongly recommended to remap the ECU with
a 'Deactivating Exhaust Valve function' map.
Or alternatively, purchase and install an After Market 'Exhaust Valve Emulator System'.
For additional ARROW info, please click on the following link -
ARROW Technical Notice