Main harnessFIC8 Harness
$57.09–63.11
FIC8 main harness for connecting the corresponding controller to the engine management system. Termination type and supplied items are confirmed in the quote.
PRODUCT / FIC8
PHOTO 01 / 04PACKAGE CONFIRMED BEFORE PURCHASE
Controller
AEM FIC8 Controller
Eight-channel piggyback controller that retains the factory ECU and supports fuel correction, ignition retard and boost valve control.
Reference unit price$437.97–484.09
Reference prices vary with exchange rates and the supplied package. Contact customer service to confirm the price, shipping and taxes.
01 / About FIC8
About FIC8
F/IC8 works alongside the factory ECU, intercepting 8 injector signals and correcting selected sensor signals. Its ignition table retards timing; it does not advance timing or provide standalone ignition control.
Eight intercepted injector channels retain the factory ECU.
Eight 21 × 17 maps include PWM and frequency functions.
Internal 2 MB logging supports recording without a PC.
Ignition correction retards timing; it does not advance it.
02 / Specifications
Specifications
- Model / part number
- 30-1930
- Injector outputs
- 8 intercepted injector channels
- Calibration tables
- 8 configurable maps, 21 × 17 cells
- Fuel correction
- Increase or decrease the factory injector pulse width
- Ignition correction
- Retard only; load from MAP, MAF or TPS
- Manifold pressure
- Internal MAP used as an absolute-pressure load input
- Electrical signal
- MAF, analogue A/B and O2 correction maps
- Software / communication
- AEM F/IC software / USB driver
- Connector / termination
- Universal loom layout: 66 unterminated wires
- Auxiliary outputs
- PWM boost-solenoid output; frequency-based MAF correction
- Operating supply
- 8–15 V DC
- Processor architecture
- Two 16-bit processors, 32 MIPS
- Internal logging memory
- 2 MB
- Internal logging interval
- 10–1275 ms; maximum sampling rate is 100 samples/s
- Internal MAP range
- 2–40 psia absolute; accuracy ±0.5 psia, resolution 0.1 psia
- MAF / analogue voltage range
- 0–6 V input and output; overload protected
- Injector driver current limit
- Driver current limit 1.7 A, with overload protection
- Switched 12 V output
- High-side driver, 1 A maximum
- Calibration switching
- Two calibrations, selected by the user-switch input
- Enclosure dimensions (L × W × H)
- 4.2 × 7.4 × 1.0 in
- O2 correction voltage range
- 0–3.5 V
03 / Package contents
Package contents
The actual supplied contents are confirmed in the itemized quote. Check the following items before payment.
Ask whether the FIC8 loom, USB cable, pressure hose and boost solenoid are supplied. The PWM output does not include a solenoid.
04 / Fitment & installation: AEM FIC8 Controller
Fitment & installation: AEM FIC8 Controller
Check the model, hardware revision and connector pins against the device’s wiring diagram.
Use the exact ECU wiring diagram; verify every circuit for continuity and shorts before connecting power.
Keep the factory ECU connected. Check the eight injector input / output pairs and crank / cam signal polarity. Allocate the frequency channel to either MAF or speedometer correction before wiring it.
Connect the internal MAP hose after the throttle body and check for leaks. Wire the boost solenoid to its assigned PWM output and verify the valve’s current requirement and hose routing.
05 / Questions about FIC8
Questions about FIC8
Can F/IC8 advance ignition?
No. F/IC ignition tables accept negative correction to retard timing, not advance it.
Is the F/IC8 universal harness plug-and-play?
The universal flying-lead loom requires vehicle-specific wiring. A matching patch harness and bypass plug are separate package checks.
Can the frequency channel correct the MAF and speedometer together?
No. The frequency channel supports either frequency-based MAF correction or speedometer correction; these functions share the channel and cannot operate simultaneously.
What does FIC8 need for boost-solenoid control?
F/IC8 provides boost-solenoid PWM control and needs a matching valve, wiring and plumbing. Confirm whether the valve is included in the order.
Is FIC8 an eight-cylinder standalone ECU?
FIC8 is a piggyback controller with eight injector interception channels. It retains the factory ECU; channel count alone does not establish engine compatibility or independent control of every engine function.
Can a FIC6 calibration be loaded into FIC8 unchanged?
Do not assume cross-model calibration compatibility. FIC6 and FIC8 have different channels and features; use the file format, software and base calibration intended for the actual controller and engine.
Can F/IC8 record data without a laptop?
Yes. Internal logging has 2 MB of memory and 10–1275 ms intervals. Logging starts when the configured trigger and user-switch conditions are met; download the result through F/IC software.
Why does F/IC8 not start an internal log?
Check the logging conditions in FIC Logger and whether the user-switch input is grounded. When that switch is assigned to dual calibrations, the logger trigger remains enabled; logging still waits for the configured conditions.
Can F/IC8 switch calibrations while connected to a PC?
Changing the user switch while connected interrupts F/IC communication. Select the A / B calibration first, then connect, edit or upload the matching map.
Why can the factory ECU cancel a F/IC8 fuel change?
The factory ECU continues closed-loop fuel correction and may counteract FIC8 adjustments. Compare OBD fuel trims with measured lambda, then check how the injector and O2 correction tables interact with the factory control strategy.
Does the F/IC8 40 psia specification mean 40 psi boost?
No. psia is absolute pressure, including atmospheric pressure. The 2–40 psia range is about 0.14–2.76 bar absolute; subtract local atmospheric pressure to obtain gauge boost.
Can the F/IC6 and F/IC8 12 V switched outputs be wired for the same load?
No. F/IC6 SW12 high-side output is limited to 6 A; F/IC8 is limited to 1 A. Use each model’s limits and pinout; injector-driver limits are separate.
Can all F/IC8 wires simply be tapped into the original harness?
No. Tap circuits read signals in parallel; intercept circuits require separate input and output connections after cutting the original circuit. Check direction, trigger polarity, continuity and shorts for each circuit.
06 / Manuals & resources
Manuals & resources
EXPLORE / Related products
Related products
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Prado FIC6 adapter harness for matching factory Prado wiring to a piggyback controller.