Intro: The Greddy E-manage product is a fully adjustable fuel and ignition computer that is wired on top of your current stock ECU. It's the nearest you will get to a full standalone ecu, but at a fraction of the cost.

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The Greddy E-manage product is a fully adjustable fuel and ignition computer that is wired on top of your current stock ECU.

It allows you to alter the signals that enter and leave your ECU to take advantage of engine modifications and upgrades in many modern Japanese cars. It does this by interfacing and intercepting signals that your cars own ECU uses to calculate fuel and ignition.

There are now two available versions of the E-manage. The original E-manage 'Blue' and more recently a far more powerful E-manage 'Ultimate'. Both of these units are extremely capable, with the Ultimate providing nothing short of an unbelievable range of options that only a standalone after market ECU could compare to but at the fraction of the cost and setup time.

To understand if you would benefit from the E-manage in 99% of cases yes you would, the extent of which depends on what changes you intend or have already made to your engine set-up. In any of the following cases there is probably no better price/performance option that exists anywhere.

Change of any of the following:

Larger injectors

Airflow meters

Major engine internal mods such as low comp pistons

Wild / uprated Cams

Larger turbo.

Intercooler or a change of intercooler.

In fact just about anything that alters any of the ways in which an engine may work from as simple things like the use of UK fuels.