Below Figures are calculated based on available online information and average BSFC for each fuel
BMW B4x Gen 1 Injector Flow Rate Info
Injector | Flow Rate @ 3600PSI | Flow Rate @ 2900PSI | Rated Pressure | Bosch Part Number | BMW Part Number | Requires Flow Rate Coding On Installation | Requires Custom Tune Calibration | Engine Compatibility |
B48/B46 EU6 | Est. 950CC | Est. 850CC | 20mPa/2900PSI | 261500541 | 13538625396 | No | No | B4x Gen 1 Only |
IFX150 | Est. 1425CC | Est. 1250CC | 29mPa/4200PSI | Null | Null | No | Yes | B4x Gen 1 Only |
XDI +40% Injectors | Est. 1330CC | Est. 1200CC | 25mPa/3600PSI | Null | Null | Yes | B4x Gen 1 Only | |
XDI +75% Injectors | Est. 1660CC | Est. 1490CC | 25mPa/3600PSI | Null | Null | Yes | B4x Gen 1 Only | |
Nostrum S1 | Est. 1280CC | Est. 1150CC | 25mPa/3600PSI | Null | Null | Yes | B4x Gen 1 Only | |
Nostrum S2 | Est. 1570CC | Est. 1400CC | 25mPa/3600PSI | Null | Null | Yes | B4x Gen 1 Only |
BMW B4xTU and B48E Injector Flow Rate Info
Injector | Flow Rate @ 5000PSI | Rated Pressure | Bosch Part Number | BMW Part Number | Requires Flow Rate Coding On Installation | Requires Custom Tune Calibration | Engine Compatibility |
B48/B46TU EU6 | Est. 1000CC | 35mPa/5000PSI | Null | 13538656548 | No | Only If Swapped With B48E(B48T1)/S58 | B4xTU and B48E |
B48E(B48T1)/S58 | Est. 1300CC | 35mPa/5000PSI | Null | 13538671991 | No | Only If Swapped With B48E(B48T1)/S58 | B4xTU and B48E |
IFX350 | Est. 1300CC | 39mPa/5600PSI | Null | Null | No | Yes | B4xTU and B48E |
IFX350X | Est. 1700CC | 39mPa/5600PSI | Null | Null | No | Yes | B4xTU and B48E |
XDI +40% Injectors | Est. 1430CC | 40mPa/5800PSI | Null | Null | No | Yes | B4xTU and B48E |
BMW B4x Gen 1 Injector Max WHP
Injector | Max WHP on 93 OCT (98 RON) @2900PSI | Max WHP on 93 OCT (98 RON) @3600PSI | Max WHP on E85 @2900PSI | Max WHP on E85 @3600PSI |
B48/B46 EU6 |
405 |
450 |
310 |
345 |
IFX150 |
586 |
668 |
423 |
482 |
XDI +40% Injectors |
563 |
624 |
406 |
450 |
XDI +75% Injectors |
700 |
778 |
505 |
562 |
Nostrum S1 |
547 |
607 |
419 |
467 |
Nostrum S2 |
668 |
742 |
512 |
570 |
BMW B4xTU and B48E Injector Max WHP
Injector | Max WHP on 93 OCT (98 RON) @5000PSI | Max WHP on E85 @5000PSI |
B48/B46TU EU6 |
460 |
350 |
B48E(B48T1)/S58 EU6 |
600 |
455 |
IFX350 |
600 |
455 |
IFX350X |
800 |
576 |
XDI +40% Injectors |
660 |
500 |