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Fuel Injector Deadtimes: Difference between revisions
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These will require an EV1 to EV6/EV14 adapter to use them with an M5X fuel injector harness. | These will require an EV1 to EV6/EV14 adapter to use them with an M5X fuel injector harness. | ||
375cc (Ford BR3E-E5A) | |||
Flow rate: 435cm³/min @ 3.5 bar | Flow rate: 435cm³/min @ 3.5 bar |
Revision as of 15:04, 4 May 2021
Every fuel injector type has a unique minimum injection time and latency for it to fully open once energized.
This latency is often referred to as injector lag, dead time, offset, or delay (ip_ti_add_dly__vb).
It is strongly dependent on the supply voltage and therefore stored in an interpolated table.
The minimum injection time is also important to make sure the injection pattern is clear and complete. (c_ti_min_iv). Minimum injection time is calculated by subtracting the dead time at 14v from the minimum pulse width.
All values here are meant for the standard fuel pressure of 3.5 bars (50.76 psi). The flow rate for different pressures can be calculated here: Injector Calculator
The voltage describing Y-axis ldpm_vb_1 is also used for the ignition coil charging Dwell time tables ip_td_*. Be careful with changes to the axis values!
ATTENTION: The conversion factor of the old definitions files is wrong. Correct conversion factor for injector deadtime is "X * 0.032", resulting in a range of 0.00ms to 8.16ms.
Hint: In order to work with an unmodified, factory fuel injector harness on M5X engine cars, the injectors used must have an EV1/Jetronic (square/rectangular) connector. Injectors with an EV6/EV14/USCAR (oval) connector will require adapters.
BMW OEM
BMW M52TU OEM injectors
Siemens part number: A2C59511971 / 1427240
Flow rate: 225cm³/min @ 3.5 bar
Minimum injection time M52TUB20: 0.640ms
Minimum injection time M52TUB23/28: 0.624ms
V | ms |
---|---|
0.0 | 3.65 |
6.0 | 3.65 |
8.0 | 1.84 |
10.0 | 1.23 |
12.0 | 0.81 |
14.0 | 0.55 |
16.0 | 0.39 |
25.0 | 0.06 |
BMW M54B30 OEM injectors
Siemens part number: A2C59514053 / 1439800
Flow rate: 252cm³/min @ 3.5 bar
Minimum injection time: 0.725ms
V | ms |
---|---|
0.0 | 3.328 |
6.0 | 3.328 |
8.0 | 1.408 |
10.0 | 0.864 |
12.0 | 0.576 |
14.0 | 0.384 |
16.0 | 0.256 |
25.0 | 0.032 |
Bosch
Bosch 0280150945
312cc Red-tops (Ford F1SE-E5A) Flow rate: 337cm³/min @ 3.5 bar
Minimum injection time: 0.496ms
V | ms |
---|---|
0.0 | 3.33 |
6.0 | 3.33 |
8.0 | 1.41 |
10.0 | 0.86 |
12.0 | 0.58 |
14.0 | 0.38 |
16.0 | 0.26 |
25.0 | 0.03 |
Bosch 0280158227
These will require an EV1 to EV6/EV14 adapter to use them with an M5X fuel injector harness.
375cc (Ford BR3E-E5A)
Flow rate: 435cm³/min @ 3.5 bar
Minimum injection time: 0.460ms
V | ms |
---|---|
0.0 | 4.91 |
6.0 | 4.91 |
8.0 | 2.35 |
10.0 | 1.62 |
12.0 | 1.19 |
14.0 | 0.94 |
16.0 | 0.85 |
25.0 | 0.85 |
These are OE injectors for the 2011-2015 Ford Mustang 5.0. (Ford part # BR3E-E5A)
Bosch 0280155968
440cc Green Giants Flow rate: 466cm³/min @ 3.5 bar
Minimum injection time: 0.468ms
V | ms |
---|---|
0.0 | 4.986 |
6.0 | 4.986 |
8.0 | 2.098 |
10.0 | 1.321 |
12.0 | 0.919 |
14.0 | 0.670 |
16.0 | 0.47 |
25.0 | 0.47 |
V | ms |
---|---|
0.0 | 5.216 |
6.0 | 5.216 |
8.0 | 2.208 |
10.0 | 1.376 |
12.0 | 0.960 |
14.0 | 0.704 |
16.0 | 0.480 |
25.0 | 0.480 |
(Same values apply to Bosch 280150558 green-tops (Ford Part# M-9593-F302)
Bosch 0280158123 627cc (Porsche 997 605 132 02)
Flow rate: 677cm³/min @ 3.5 bar
Minimum injection time: 0.448ms
V | ms |
---|---|
0.0 | 3.072 |
6.0 | 3.072 |
8.0 | 3.072 |
10.0 | 1.408 |
12.0 | 0.992 |
14.0 | 0.768 |
16.0 | 0.576 |
25.0 | 0.576 |
If you encounter odd fueling issues, try using the following info instead.
Minimum injection time: 0.160ms
V | ms |
---|---|
0.0 | 3.330 |
6.0 | 3.330 |
8.0 | 2.020 |
10.0 | 1.250 |
12.0 | 0.860 |
14.0 | 0.540 |
16.0 | 0.350 |
25.0 | 0.030 |
Lucas/Delphi 42.5 lb/hr 445cc
Part number: 01D030B
Minimum injection time: 0.410ms
V | ms |
---|---|
0.0 | 4.35 |
6.0 | 4.35 |
8.0 | 1.82 |
10.0 | 1.12 |
12.0 | 0.77 |
14.0 | 0.58 |
16.0 | 0.51 |
25.0 | 0.10 |
Siemens DEKA 6900371 440cc/min 42lb/hr (Volvo 1.9l turbo)
Flow rate: 440cc/min @ 3 bar
475cc/min @ 3.5 bar
Minimum injection time: 0.501ms
V | ms |
---|---|
0.0 | 4.44 |
6.0 | 4.44 |
8.0 | 1.88 |
10.0 | 1.15 |
12.0 | 0.94 |
14.0 | 0.85 |
16.0 | 0.77 |
25.0 | 0.04 |
Siemens DEKA FI114961 (107961) 630cc/min
39.15 PSI/270 kPa:
Minimum injection time: 0.981ms
V | ms |
---|---|
0.0 | 2.60 |
6.0 | 2.60 |
8.0 | 1.45 |
10.0 | 0.94 |
12.0 | 0.64 |
14.0 | 0.43 |
16.0 | 0.26 |
25.0 | 0.26 |
Siemens DEKA FI114991 (110324) 875cc/min 80lb/hr
43.5PSI / 300kPa:
Minimum injection time: 0.600ms
V | ms |
---|---|
0.0 | 2.811 |
6.0 | 2.811 |
8.0 | 1.777 |
10.0 | 1.288 |
12.0 | 1.017 |
14.0 | 0.801 |
16.0 | 0.639 |
25.0 | 0.639 |
- Ford M-9593-LU80 injectors likely have the same dead time values, but have an EV6/EV14/USCAR connector.
Injector Dynamics ID1050X 1065cc/min (101 lb/hr)
- These will require an EV1 to EV6/EV14 adapter to use them with an M5X fuel injector harness.
Flow rate: 1235cm³/min @ 3.5 bar
Minimum injection time: 0.200ms
V | ms |
---|---|
0.0 | 2.025 |
6.0 | 2.025 |
8.0 | 2.025 |
10.0 | 1.475 |
12.0 | 1.160 |
14.0 | 0.955 |
16.0 | 0.825 |
25.0 | 0.825 |