the SBD is a blatent knockoff of the GReddy kit.
You'd need a specific tune for your kit. I don't recommend using a OTS tune with a turbo setup. At all.
- 280-300whp is possible, depending on your fuel.
- EL very possible
- Why ball bearing? Twin scroll has no effect for this platform.
- Ceramic is also available, and can also be DIY.
- The only emissions compliant turbo on the market is WORKS, and will not make 280-300whp at emissions compliant trim.
Here's a graph from my *journal bearing* GReddy T518Z turbo kit.
Grey = stock 2017
Green = 91 octane, 7psi tapering to 5.5psi
Pink = E70, 7psi tapering to 5.5psi
Orange = E70 12psi tapering to 10.5psi