What's the difference between AWE k04 and APR stage 3? Aren't they both turbo upgrades?
There are many differences between the two kits. The APR Stage 3 kit will put down around 100 HP more than the other kit near redline with existing pre packaged software.
The APR Stage 3 system is a totally new turbocharger system with inconel manifold build and designed by APR, 4 inch maf, silicone hoses, oil lines, coolant lines, down pipe, down turn, and many other components. It's a complete turn key turbocharger system.
The other system is a bolt on factory turbo that's smaller.
Also, we make software for the other bolt on factory turbocharger system which has shown quite a large differences in power compared to the pre packaged software, as seen below by a customers independent testing.