Turbo Surge Controller UPDATE
November 12, 2025A quick development update for the Turbo Surge Controller (TASC) product.
The release date for the turbo surge controller has been pushed back a few times.
Why The Delay?
The initial control idea, which looked good ingenious, ultimately did not give fine enough control no matter how sophisticated the software was. This led to complete rethink of the anti-surge control method.
Hence the pushed back release dates and the rethink.
As things stand at the moment, testing of the new control method will start in late 2025 with the penciled in release date being early Q2 26.
The new anti-surge control method is much more conventional which will hopefully mean the testing process will be shorter and more predictable.
Why a Turbo Anti Surge Controller (TASC)?
And if you are reading this and wondering what is the point of TASC, what benefits does it bring.
TASC gives the user one or two things depending on the turbo setup.
1.More boost at lower RPM without turbo surge.
2.Allows the use of a bigger turbo at lower airflow rates without turbo surge.
TASC allows more boost at the same airflow mass through the engine and it does this by effectively moving the surge line on the turbo compressor map to the left.
Anti-Surge Housings
What are the benefits of TASC over anti-surge compressor housings?
I guess the most obvious benefit is when the turbo you want to use does not come with an anti-surge housing and you need the anti-surge feature.
The second benefit of TASC over anti-surge compressor housings is efficiency. An anti-surge housing is always bleeding airflow regardless of whether the turbo needs it at the time ie wasting energy for no good reason.
TASC does not have this problem because it’s anti-surge control is only active when the turbo is operating under surge conditions (high boost & low airflow). When the turbo is not operating under surge conditions, all the airflow the turbo is producing goes into the engine.
An anti-surge compressor housing forces the turbo to spin faster at peak power (vs the same turbo without a surge housing). And this in turn requires the turbo to do more work, which keeps the wastegate less open, which in turn forces more exhaust gas through the turbo, which creates more temperature and pressure in the exhaust manifold, for the same power output.
If our anti-surge control is done electronically (instead of passively like an anti-surge housing), for the same power, our turbo spins slower, we have less stress on the turbo, less wear and tear on the turbo, lower exhaust temps and lower back pressure in the exhaust manifold.
