HKS F-CON iS (OSC set) (hks42011-AK004)

Regular price $972.00 USD Sale price $972.00 USD Regular price $1,080.00 USD
Sale 10.0% $108.00 USD (10.0%)
Special order - Ships in 5+ weeks
SKU: hks42011-AK004
Product Description

F-CON iS can control the latest advanced engines. Just connect to a stock ECU with a vehicle-specified harness without modification. HKS "F-CON iS" is a piggy-back ECU for fuel and ignition management as well as new features. Functions for fuel and ignition controls are inherited from the previous model F-CON SZ. In addition to it, a function to collect OBD II diagnosis data was added for correction of setting due to stock close-loop correction values when intake/exhaust parts are upgraded or boost level setting is changed.


  • For PowerWriter shope. No data included. Setting by PowerWriter is required. OBDII communication cable included
  • Pictures may differ in the actual product
  • Special Order


  • Universal

Functions of F-CON iS 1

Correction of Fuel Amount and Ignition Timing
Fuel signal and Ignition Timing is controlled with trim maps inside F-CON iS. Four sub-maps for each fuel and ignition control can be easily switched with dip switches.
FCD Function
Fuel Cut at high boost level can be canceled with FCD function.
SLD Function
Vehicle speed signal can be controlled to cancel speed limiter by stock ECU.
* Not for Automatic Transmission and electro-magnet pick-up type sensor.
Engine Check Function
Even with F-CON iS, the engine check function of stock ECU works.
(Except some vehicles)

Functions of F-CON iS 2

A/T Shift Up, Shift Down Ignition Compensation
A/T Shift Up, Shift Down Ignition Compensation To prevent knocking of vehicles with automatic transmission during shift up at high load or shift down for acceleration, engine rpm difference and throttle position are kept and ignition timing is retarded for a certain period.
NVCS Control Function *
Solenoid of Nissan NVCS (Nissan Valve Control System) can be controlled with F-CON iS with RPM + Water Temperature condition.
Air Flow (Intake Air Volume sensor) Conversion Function
Air flow meter signal input can be converted with a 16x24 map with Air Flow Input value and RPM axis. When characteristics of airflow meter output are changed from the stock condition, the airflow meter signal can be corrected.
(Get advice from PowerWriter shops.)


  • AIC Function: Up to 2 additional injectors can be controlled.
    Remarks: Injectors are required separately.
  • EIDS Function: When the throttle is closed, intake air returns to the airflow meter and it affects to airflow meter voltage. The voltage can be fixed to a certain voltage to prevent engine stall.
    Remarks: SVQ is required separately.
  • Immobilizer Function: When the ignition is turned on, if the switch is not at setting value, the engine will not start. Remarks: Mixture Controller is required separately.
  • OSC: It enables Fuel setting for the Stock close-loop area.
    (Setting at PowerWriter shops is required.)

New Functions of F-CON iS

Video Output Display Function (NTSC only)

Output signals from F-CON iS can be displayed on a monitor.

  • Up to 18 items
  • Each data can be shown by bar graph and numbers.
    With the Screen changeover switch, items of the screen can be changed. (Items can be selected with PowerWriter.)

Basic Items: Engine rpm, Vehicle Speed, Air Flowmeter output voltage, Throttle Position, Water Temperature, Intake Air Temperature, Battery Voltage, Injector Duration, Pressure

DB Meter I/F Unit, A/F Knock Amp. or Communication Cable, any data can be shown on the monitor

  • I/F Unit + Sensors
    Items: Boost (Vacuum) Pressure, Oil Temperature, Water Temperature, Oil Pressure, Fuel Pressure, Exhaust Gas Temperature
  • A/F Knock Amp.
    Items: A/F value, Knock Sensor level
  • Communication Harness
    Items: OBD Ignition Timing, A/F Correction Value, A/F Close-Loop Value

* One of the I/F Unit or Communication Cable can be connected.

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

Customer Reviews

No reviews yet