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For some reason I can't do the math in my head - if standard gasoline is about 14.7:1 stoichiometric, and toluene is 14:1, then with a high blend of toluene (I've recently decided to massively increase my toluene fueling up to 70% from 25%), what happens to the AFR as displayed by my wideband?
On pure pump gas, my tune is set for 11.0:1 at full boost (sometimes dips to 10.9~10.8). The more toluene I add, will that go up or down (read like 11.3:1, or read like 10.5:1). This is with zero change in fueling or ignition btw.
In hot weather, the car does love the tol. Where pump gas loses knock resistance when heated, toluene vaporizes better (I have to run 25% in colder weather or it won't light off). The engine note mellows, and the revs become smooth as cream when running very high levels of toluene. I guess I could bump the ignition up for the higher toluene? Or just let it run with that much more knock protection; I'll have to reduce the toluene load when the weather cools. I might start tweaking when my modified twin turbo pipe arrives
On pure pump gas, my tune is set for 11.0:1 at full boost (sometimes dips to 10.9~10.8). The more toluene I add, will that go up or down (read like 11.3:1, or read like 10.5:1). This is with zero change in fueling or ignition btw.
In hot weather, the car does love the tol. Where pump gas loses knock resistance when heated, toluene vaporizes better (I have to run 25% in colder weather or it won't light off). The engine note mellows, and the revs become smooth as cream when running very high levels of toluene. I guess I could bump the ignition up for the higher toluene? Or just let it run with that much more knock protection; I'll have to reduce the toluene load when the weather cools. I might start tweaking when my modified twin turbo pipe arrives