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Megahurtz · 10-02-2023, 08:51 AM

E50-E60 has 90% of the power gain of E80. You can probably get another degree of timing in at E80. If you run E80 and go beyond the spray window, you start to lose power and your wideband lambda readings become unreliable.

So E50-E60 in a proper spray window vs trying to stretch the fuel system to E80 and spraying past the spray window will equal no gain or actually a loss of power up top.

Just a word of advice. 6.5ms at redline is the beginning of the area where you start to lose power up top from improper mixture and burn. When it gets cold out, you will be in the danger zone and the engine will start to detonate and/or misfire due to spraying too far into the compression stroke. This is when you start breaking piston rings.

I'm not here to tell you what to do. I'm only trying to provide some information for you to consider when you make your choices.

10-02-2023, 08:51 AM	#26
Megahurtz Snackbar Tuning Drives: 2023 SGM ZL1 Join Date: Oct 2016 Location: Florida Posts: 1,522	E50-E60 has 90% of the power gain of E80. You can probably get another degree of timing in at E80. If you run E80 and go beyond the spray window, you start to lose power and your wideband lambda readings become unreliable. So E50-E60 in a proper spray window vs trying to stretch the fuel system to E80 and spraying past the spray window will equal no gain or actually a loss of power up top. Just a word of advice. 6.5ms at redline is the beginning of the area where you start to lose power up top from improper mixture and burn. When it gets cold out, you will be in the danger zone and the engine will start to detonate and/or misfire due to spraying too far into the compression stroke. This is when you start breaking piston rings. I'm not here to tell you what to do. I'm only trying to provide some information for you to consider when you make your choices.