That's pretty much what I do. I have a 3 gallon VP race can which is like the perfect size. I take that to gas station. Put in 3-3.5 E85, then 7 gallons or whatever it takes to top it off for E30-E35ish. My E station is like 100 miles away, but we go there every so often for shopping...
I would recommend reaching out and contacting any you are interested in first... I'm sure you have some questions etc. How quickly they respond/how they respond may help you decide what route to take.
The fact is most/if not all good tuners tend to get overwhelmed after they start doing good...
I believe the Cobb OTS tunes are set up to be boost based logic as you saw in the map notes.
Yeah, give us more info on how you have the wastegate/boost control solenoid hooked up...may be a simple plumbing issue.
And confirm you are running IWG only? You just got the manifold with EWG for...
Sorry I don't even have a speed anymore, but you could pretty easily cobble together something using straight or 90* quick connect fittings and some fuel line. I don't think anyone has a concise DIY guide on here unfortunately. Talking to the guys today, the factory quick connects at the hard...
https://www.fuel-it.com/bluetooth-flex-fuel-analyzer/
BT module is $200, you can find a sensor for around $50, or pay them $100 for one. You'll need the GM pigtail too for basic wiring. I ran my power wire to the fuel pump fuse. I mean all in all you're looking at around or little over...
https://mazdaspeeds.org/index.php?threads/diy-ethanol-content-gauge.5185/page-2
Good post by Johnny tightlips ok where to put it online on the feed line.
The Briggs and Stratton one is ok but hard to get accurate due to small size and larger diameter. I bought it too. What I have now and...
Get a test kit and check the E content a few times and see how consistent it is. If it's consistent, then you can calculate it pretty easily. Double check in the winter time to make sure it doesn't change or what the winter blend is.
And/or run an ethanol content sensor. Takes a lot of the...