Standalone-style / Factory Evo X ECU

ROTATIONAL
IDLE.

Real fuel or ignition cut.
Engine control you can tune.

Proper rotational idle on the stock OEM ECU. A controlled cut strategy for idle speed, airflow and cooling-focused calibration, with the distinctive rhythm that comes with it.

Get Rotational Idle

$49.99USD / service price

Check your ROM first

5MT + SSTOEM ECUExact-ROM review

ROTATIONAL IDLEOEM ECU / EVO X

Explore the cut methods

REAL CUT CONTROL.

Event01020304

FuelONCUTONCUT

SparkONONONON

ResultFIRECUTFIRECUT

Control through injection.

Selected injection events are cut to control idle speed. A common rotational-idle approach that allows air through the cut events.

Conceptual events · illustration only, not a live ECU display

01Actual cut eventsFuel or ignition control

02Cooling-focused setupMatch the method to the engine

03Your factory ECUSupported Evo X ROMs

Two methods. A deliberate choice.

CONTROL THE IDLE.
CHOOSE YOUR CUT.

Use fuel or ignition cut to suit your idle and thermal-management strategy. The available controls are matched to your exact ROM.

01 / INJECTION

FUEL CUT.

Controls idle speed by cutting selected injection events. Air can pass through those events without injected fuel.

The common rotational-idle approach

02 / IGNITION

IGNITION CUT.

Controls idle speed by cutting selected spark events while retaining fuel delivery. Choose this where fuel flow is part of the engine-cooling strategy.

Retains fuel flow during cut events

Cooling is a calibration strategy.

Airflow, fuel, cut method and engine setup work together. Select the method for your application; ignition cut can also add heat to the exhaust.

Cut-method reference

Proper rotational idle

REAL CUT CONTROL.
BEYOND A GHOST CAM.

The idle rhythm comes from actual fuel or ignition cut events. It uses a rotational cut strategy to control combustion at idle, rather than a timing-only change to imitate a lumpy cam.

Choose your cut method, then dial in the supported idle-speed and strength settings for your engine.

Idle RPM

Set the supported idle-speed controls for your setup.

Cut strength

Adjust the cut pattern and idle character.

Activation

Use the activation and exit conditions supplied for your ROM.

Prepared for your file

YOUR ECU.
YOUR SETUP.

Send your current working ECU BIN and tell us your preferred cut method and idle character. Your ROM, transmission and existing patches are checked before work and delivery.

Patched ECU BIN matched to your source file
TXT instructions with a customer XML snippet
Supported settings and activation instructions

A separate service. Combine it with other compatible ECU features in one order.