VGT & Hybrid turbos
The main difference between the hybrid and VGT turbo is that the VGT technically has the ability to provide a wider spread of power when set up correctly, but as with any tuning modification, it does need everything to be working 100% to achieve the best results.
Standard, fixed geometry turbo design is always a compromise. Engines need a small turbo for fast spool-up and improved throttle response (reduced turbo-lag) but the small compressor size does not allow enough flow for anything beyond mid-range revs. So a larger turbo is required for mid-range and higher revs and increased flow, but this leads to increased lag at the low end.
The VGT – Variable Geometry turbocharger acts like a small turbo initially then alters geometry to increase flow in higher revs, giving an improved spread of power across the rev range. Our VGT units use special actuator operated by boost pressure to control the vane angle. Power is improved throughout the rev range but particularly in the lower and mid-range revs. Turbo lag is reduced and compliments any other tuning such as an uprated intercooler.
The Hybrid turbo is constructed with a larger, light weight CNC machined billet compressor and exhaust turbine. Blades are specially designed to help reduce “lag”, plus the unit has with a stronger 360 degree thrust bearing, allowing higher speeds and thus deal with higher boost pressures safely. The compressor housing is machined to accept the larger 2058 compressor instead of standard 2052, meaning greater flow capacity.
Both turbos have similar maximum volume and peak power capacity.
Fuelling needs to be optimised to achieve the best results but this is not imperative for a noticeable improvement in drive-ability.
We strongly recommend an uprated intercooler is installed prior to fitting an uprated turbo and fresh oil and filter must be used at the time of installation.
Hybrid turbos are sold on an exchange basis whereas VGT is outright sale.