I have a 5 psi spring in the wastegate so when driving with 91 octane I will be driving with boost on low. Reality is the best thing I can do for economy would be leave the turbo off the car so to that point most of the time I will be driving with no boost. 91 octane is also the first stage of the build. after its running and I have a solid baseline I will tune for E85 and more power the I will be adding fuel capacity to the car and eventually I want to run an entire second fuel system (bi fuel). I also have interests in CNG but still unsure on that direction. Both E85 and CNG are close to work.
https://www.hondata.com/?_route_=injector-driver
this is why the high compression ratio, the idea was to run the highest I could get away with on 91 and when driving on gasoline I will need to be mindful to make it work.
also keep in mind my tuner is not very involved in my decision making, he's mostly there to make sure I dont blow things up and is the local guy with the dyno/kpro guru. Funny thing is he had no idea you could bolt the A3 head on the A2 nor would he ever try
Also I love hearing about the luxury quality of the car since I bought it not running. It's really what I want.