What is a turbo expander?
It’s basically a ‘cold air’ turbocharger
How does it work?
The engine charge air passes through the compressor; it’s then cooled and flows into the turbine. The turbine drops the temperature and the power generated drives the compressor. Under road conditions the charge air temperature can be up to 15 degC BELOW ambient temperature
What are the benefits of a turbo expander?
Increase knock margin, allowing increased ignition advance and higher boost pressures
Why have I never heard of these before?
Because it’s not been done before, although known about in R&D circles
Who else uses turbo expanders?
How else can I get lots of extra power for my car?
Increasing boost pressure is the only way. Without the ACT system the boost temperatures rise, leading to early onset of knock. This in turn requires ignition retards and over-fuelling. For very highly boosted engines ‘mega-knock’ is a big risk ~ two ‘bangs’ followed by piston failure
Will it work on my car?
The system will work on all turbocharged petrol engines. The results will depend on the state of tune and any changes already made to the main boost system. It works in a different way of diesel engines, but can still produce power increases
Can I buy a kit?
Can I fit it myself?
No, the installation requirements are very specific to this new technology
Where do I have to go for a fitting?
To ACT for first-fit systems is required. Standard kits will be fitted by an ACT distributor
What extra power can I expect?
The actual power increase depends on the state of tune of your engine. The higher the tune and the more knock-sensitive is it, then the greater the gain with the ACT system
How reliable is this device?
Completely, it operates like a ‘cold’’ turbocharger, so has a much longer life
How long does fitting take?
The time required is installation-specific; we will quote for your exact requirement
Do you test the car before and after fitting?
What if it goes wrong?
If it fails due to our workmanship we’ll replace it !!!
What guarantee do you offer?
How much does it cost?
Does it work for Trains, boats, Planes, Generators?
It will operate on all turbocharged engines, both petrol and diesel
When will you be able to offer fitting in the North of England/Scotland/Wales/N Ireland etc.?
Will the turbo expander reduce my car’s harmful emissions?
Yes, it will reduce unburnt fuel emissions on high power petrol engines. On diesel engines it will reduce NOx emissions