What is the best switchboard to paddle with Harley-Davidson's injection

In a Previous article We explained the need to row or emphasize the injection if the escapes, the filter or some other component that modified the amount of air that enters or leaves the engine were changed.
Continuing with this issue we will talk about the different existing options in the market to carry out this operation.

The available alternatives
When “paddling” our switchboard we have to choose the appropriate device based on our needs, the modifications made in the engine and its components and also depending on our budget. We could currently divide the different technologies into 3 differentiated groups:

• Basic enriching

In this section we do not find devices that are interspersed between the switchboard and the injectors. These devices intercept the signal from the ECM and increase it or decrease, managing to vary the opening time of the injectors and therefore the amount of gasoline delivered.
Its adjustment is quite rough and is usually done by means of manual or buttons potentiometers. 3 RPM ranges are usually adjusted: low, medium and high.
Wiseco's controller would belong to this category,

The Big Shot of Arlen Ness,

FI2000 Cobra,

The TFI of Techlusion and all the variations that the latter manufacturer makes for different brands.

We will also include in this section the Lambda probe enriches of Nightrider or Namz.

The only advantage of these enriching is that they are relatively economic, but when the results are contrasted in a power bank it is very difficult to refine the engine correctly. However, it is always better to install them than to roll without anything else.

• Advanced enriching

In this section we are going to encompass devices that basically work as the previous ones, intercepting and varying the signals of the ECM, but in this case they interact with more sensors, knowing data such as the accelerator position, the emptiness in the admission body, etc. and their mode of action vary depending on these data.
Most of these advanced modules allow their programming through a personal computer and have software to modify the different ignition, fuel and VE maps (volumetric efficiency).
Its price is significantly higher than that of basic enrichors and require better knowledge of the operation of the EFI system for correct optimization.
In this category the kits would enter Power Commander of Dynojet,

Fuelpak from Vance & Hines,

Accel slm, Twin Tuner of Daytona,

Dyna 2000 of Dynatek, Precision Engine of Revolution, etc ...
They generally allow the discharge of different maps from the Internet, appropriate to the components of our motorcycle, and in recent years the marketing of autotune kits that complement them is being extended, allowing them to adjust these maps practically to the millimeter without the need for great knowledge and disregard Power bank

• Native software modifiers

In the last group of the “centralitas” of injection are those devices that do not intercept or modify the signals, but are able to rewrite the original ECM code, reprogramming natively.
They are basically interfaces that allow communicating a personal computer directly with the motorcycle and varying their parameters and tables (RPM at the idle, gasoline, ignition, constants, temperature management ...). Its price is the highest and the software that accompanies these products is very advanced, so they require good knowledge about EFI systems in order to make the most of them.
It is also true that in recent years manufacturers are striving to facilitate their use and almost all have the possibility of performing active (autotune) learning without the need for auxiliary devices (they take advantage of original Lambda probes) and with an amazing resolution. Even some of them have touch screens or direct connection with the mobile phone, to be able to see through the screen the engine constants and values ​​(speed, RMP, temperature, failure codes, map change ...).
Another of the strengths of the software is that it has a diagnostic capacity, so they become a useful tool.
In this last category we would have the Super Screamin 'Eagle Tuner,

he TTS MASTERTUNE,

The Dynojet Power Vision,

Vigilant of superchips

or the Fuelpak FP3 of Vance & Hines.

Side mention deserves the devices with a plant included, such as Thundermax,

Daytona TCFI

or the VFI of S&S.

These kits include their own ECM and due to their price and complexity, they are only recommended in very modified engines or in projects where there is no original switchboard.

Drawing conclusions
Now that you have the basic knowledge about the different options it is simply a matter of assessing which is the most appropriate product based on your type of motorcycle, your objectives and the available budget. In any case it is essential to read the manufacturer's instructions and recommendations well and understand what we are going to do before starting the installation.
In this way you will feel comfortable with its use and you can make the most of its characteristics.
As always recalls that in most countries it is not allowed to modify the injection system for vehicles that circulate on public roads ...

Frank Burguera

#mecanicaharley