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