Inquiry about switching to E98 Renegade racefuel

I am driving an E36 BMW with 2jz Swap

The engine is fully modified and pushing around 680 HP on E100 on 25 PSI boost on safe mode 6466 DBB precision turbo

now i want to go with new fuel type Renegada E98 as E100 is not available any more in our country

https://www.renegaderacefuel.com/product/pro-e98/

i got a solid fuel system with EV-14 2200 CC fuel injectors 3 X 044 Bosch pumps (no fuel starving at all

Link extreme ECU

my question and concern is

1-shpould i go Idl 9.6 AFR ?

2-should i go WOT with 8.1 AF?

please advise as a tuner in my town says you have to go 12.1 WOT and idle 13.9 AFR

Need your opinion guys as i am getting confused

Thanks and appreciate your support

Hi. Since WBO sensor is measuring only residual oxygen content your tuner is correct - you should be using his numbers although they are for pump gasoline but they still represent correct lambda 0.94 at idle and 0.82 at WOT. It is just a matter of using appropriate scaling on the gauge - if you change scale on the gauge for ethanol one then you will get your figures displayed.

PS I would try to use 11.7 AFR at WOT as a starting point and then go leaner providing no knock occurring...

The confusion that occurs when running ethanol blends and using a wideband calibrated with a gasoline stoichiometric setting is just one more reason why you're far better learning to tune using units of lambda. Lambda 1.00 is always stoich regardless of the fuel.

The confusion that occurs when running ethanol blends and using a wideband calibrated with a gasoline stoichiometric setting is just one more reason why you're far better learning to tune using units of lambda. Lambda 1.00 is always stoich regardless of the fuel.