N20/N55/S55 Stage 1 Injector Upgrade
Stage 1 injector upgrade for the N20/N55/S55. These are OEM S63TU injectors from BMW compatible in your N20/N55/S55. These Injectors are rated for 1250cc compared to the Stock 804cc. This upgrade is for those running E85 or reaching the limits of the stock injectors on gasoline based fuels.
These Injectors require custom tuning and ISTA Coding to work
For N20 users, stock HPFPs are not suitable for these injectors. A B58TU or stage 2 HPFP is needed.
BMW Part #13647599876
Bosch Part #0261500136
Price is per injector