Boost Spiking and Manual Boost Controllers

[turbosmart]

This is a question we get asked quite frequently: Will fitting a manual boost controller stop the boost from spiking or over-boosting?

With a correctly installed boost controller you should not be experiencing any spikes in boost pressures. However, if you have a pre-existing problem with an excessive amount of boost pressure it’s best to get the problem diagnosed and fixed before installing a boost controller.



BOOST SPIKING
If boost spiking occurs and is undesirable for your application, the gate system can be removed to give you a less aggressive boost curve. This modification is only required in a minimal number of applications.

The gate system can be removed by the following steps.
(Perform this modification on a clean bench so that the ball and spring are not lost.)

• Allow the engine to cool down before removing the Boost Tee from your vehicle

• Identify the input nipple with the restrictor at the end. Loosen the input nipple and remove the ball and spring.

• Check that the internal air passages are clear and free from debris

• Re-install the boost controller by following the instructions for your setup

• You will need to re-adjust your boost settings after the removal of the gate.



TROUBLE SHOOTING
The following points should be checked if you find that your engine is developing excessive boost, the boost pressure is fluctuating or
the desired boost level cannot be achieved. Please note, the following checks will cure 99% of problems experienced when fitting a Turbosmart boost controller.

• Check that the boost controller is installed so that the arrow points toward the wastegate actuator

• Check the joining hoses for splits, cracks or loose connection and are the correct size for the application

• Check to see if the boost controller is blocked or contaminated with dirt or debris

• Ensure that there is nothing but the boost controller in the hose between the pressure source and the wastegate actuator, ie tee
pieces for boost gauge or to factory boost solenoid.

• Pressure test the wastegate actuator for leakage,

Click here for more info on Turbosmart Manual (Gated) Boost Controllers.