Finally buttoned all of the tuning and now am 100% flex fuel. Completed the full 4D fuel mapping thanks ALL to Ernie for all his tuning skills. His is a Maestro. Did pretty good HP wise with a extremely safe tune. I say safe, because I was 92 octane, but at E17. I would guess local pumps to be about E10, so I was a bit above the pumps for this time of year. like that at 2500rpms I have more WTQ that a stock Supra. Although I need to get to 4200rpms to match the stock Supra HP. Now to someday figure away to eliminate that transition dip.
New 2012 GT28 Ported Volutes:
This makes a big difference doing this as the process for boring out for larger wheels leaves a “ledge”. The airflow hits this “wall” and gets thrown back. Buy smoothing and tapering the machine cut edge allows for a quicker spooling.