How To… Unichip Turbo Module

The Unichip Turbo Module

The turbo module is designed for aftermarket turbocharger or supercharger applications.

It is a 3 in 1 unit which are:

  1. Built-in MAP sensor
  2. 0-5 Volt Signal Clamp
  3. Injector or Solenoid

Click on the images below to enlarge

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Unichip map download tip

When you mount the turbo module keep the pipe as short as possible, the longer the vacuum pipe to the Turbo module the slower the response will be. Mount the turbo module close to the intake-manifold. Use a short pipe and longer wires to the Unichip.

Unichip Map Warning Warning!
Never mount the turbo module inside the passenger compartment, see tip above

Powering-up the Turbo Module

Lets go into details on each of the features of the Turbo Module. To explain this I will use a block diagram format as shown in the schematic picture below. The second picture shows 12 volt battery voltage connected to pins 6 (12 volt negative) green wire, and pin 3 (12 volt positive) red wire.

Click on the images below to enlarge

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The Map Sensor

The MAP sensor inside the Turbo module will create an output signal from 0 to 5 Volts for an absolute pressure from 0 to 2.5 bar. There is also a 3.5 bar version available. If you only want to use the MAP sensor signal you only have to connect to the Unichip + 12v and Unichip ground. Connect the map sensor signal to the input you will be using to measure the boost. You may use any of the 5 voltage inputs. Typically you will use the TPS or 0-5V 1 input.

Click on the images below to enlarge

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The Signal Clamp

The Turbo module has a signal clamp. The clamp inside the version Q is much better, but if for any reason you want to use the clamp circuit in the turbo module you can still do so. To set the clamp, power the TBM with the thin brown and red wires. Supply the black “signal in” wire with 5 Volts and measure between the “clamped signal out” wire and the thin brown wire with a digital voltage meter. Turn the trim-pot until the desired clamping voltage is reached. A typical value would be 4.5 Volts. If a five volt supply is not available you may power the “signal in” wire straight from the battery. In this case you have to set the clamping value about 0.15 Volts higher than desired clamping voltage. If you aren’t using the clamp simply don’t connect the “signal in” or “signal out” wires.

Click on the images below to enlarge

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The Driver

The driver in the Turbo Module is designed to drive devices with impedance between 3 and 16 ohms. Lower impedance will destroy the driver! To use the driver in the Turbo module you have to connect the battery negative, the injector (or other solenoid) pull-down signal, the Unichip power, and Unichip ground.

Click on the images below to enlarge

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