Originally Posted by changster123
Do you have pictures of the turbos side by side with both the compressor and turbine housings showing? Your pic hides the compressor housing on one.
Champion Motorsport Released these images
Recently we've had a few customers express some interest in GT2 turbos as an upgrade from their existing VTG's, so I thought I'd take a minute to show how the GT2 turbos are different from standard VTG's, and hopefully make some people's decisions on upgrades a little easier. A customer sent his factory GT2 turbos in for our CMS billet upgrade, so this was the perfect opportunity to snap a few pictures of the stock GT2 for reference. For the sake of this comparison, we'll be using 3 examples:
Stock GT2 Turbo
Standard Champion Billet Turbo
Champion Billet Turbo with ported exhaust inlet
Since the factory GT2 turbo uses the same compressor housing and wheel as the standard VTG we'll focus on the turbine side, which is where the differences are. There are basically 3 differences between a stock GT2 VTG turbo and a stock VTG, all 3 are on the turbine side.
The picture below shows all 3 turbos side by side:
though it's a bit difficult to see in the pictures, the ported inlet of the standard VTG turbine housing replicates the GT2's inlet profile much closer, again slightly increasing the A/R of the turbine inlet, which provides a much greater match to our redesigned billet compressor housings.
So, hopefully this little bit of information will be helpful to some folks who are undecided about which direction they want to go with turbochargers. Overall, although there ARE a few small differences between the stock VTG and the GT2 VTG, the big question everyone wants to know is how this translates to power. Will GT2 turbos offer a slight power upgrade compared to standard turbos....yes. But, realistically the gains you can expect are going to be minimal. The most notable gain will be in efficiency. Any time you can improve efficiency, you're likely to gain power. How much power depends largely on the quality and performance of all your other hardware upgrades.