@Vargasturbotech, I'm nearly convinced that JB4+downpipe+this turbo is a good option for the 350/350 power level, possibly reducing wheelspin (from the torque spike of OEM baby turbos), and holding boost and power to redline.
Referring to the 350/350 power level:
- All testing mentioned in this thread is the stage 2 turbo, not the stage 2+, correct?
- In this log you posted, do you know why boost pressure hits 22psi initially but needs another 800rpm to gradually increase to 25psi, the target? Is this a stock ECU thing, JB4 thing, or wastegate/regulation thing?
- IDC - In the same log, why would injector duty cycle spike from 61 to 78 then reduce back down? The AFR remains consistent, and it doesn't correlate with the engine output (max torque is at 3,500rpm but this IDC spike is around 4,500rpm).
- AFR - In my personal logs using an is20+JB4, I see ~13.1:1 AFR @ 4,000rpm reducing gradually to ~12.0:1 @5,500pm. In your log, it looks like ~13.0:1 leaning to 13.8:1 at those same RPMs. Was this done intentionally for power? I assume since duty cycle isn't maxed, it's not a hardware problem.
- Trims - These don't rise to increase fueling at high RPM. Intentional while tuning?
- If IDC only hits 78%, what is the main reason this power level is your recommendable maximum for stock fueling, including in-tank pump?
- If not aiming for 500whp, did you like the car at 350/350 as a long term solution on 91oct with just downpipe, JB4, and this unit? Any concerns?
Good luck with upcoming track times. Do you have an email alert through the website for when the introductory price is available?
You should let Terry, or George know to remove the flat boost button, as its going to cause timing pulls...
