I thought this is an RX7 LS1 Race Car, WOT no LTFTs! What you say is true eventualy and if the LTFTs arent disabled. This is with a WBO2 AFR gauge from the WBO2 directly, also!!
1.) But if you have a new tank of fuel (I would love to say gas but those days are gone) You will get an AFR reading on the WBO2 sensor that is approx +6% out on E10 if the AFR is set to 14.63 for gas for around 10 -20 minutes until the LTFTs adjust, That is right I think. But you can tell what is in your tank by the WBO2 AFR gauge for a short period it would seem and let you know also especially if the trims are way out. So with V2 you just carry a tune or two for the E%. It is not a flex fuel setup for sure but it is not to bad I think for a setup you already own so you dont have to buy a sensor for $400.00
2.) In the case of this thread and the RX7 LS1 race car it will be under WOT mostly, so no LTFTs. It is already E70-98 about 20-25% difference and the AFR gauge should show this w/out ltfts and . Then w/RR you change that (B3601) on the fly w/RR when you start the car up after it is warmed, right? How hard is that? I must be missing something here, I have not used RR but that is my understanding. No need to reflash and change on the fly and would be a great setup for this application as apposed to a flex fuel setup that is questionable?. Again not a flex fuel but this will work right w/RR. You have one and I dont so is that correct no need to reflash and change on the fly? The main idea here is the AFR gauge and what it says and then change b3601 on the fly. If what I have said is correct that is pretty close to a flex fuel setup as we can get I think?
Let me know,
98 tigershark