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7LitreC5 · 03-25-2021, 08:49 AM

Max ethanol content for you is going to be different than most of the others here because of your altitude. You make less power so you can run more E%. I would recommend that you get a gauge (Banks will do it) or buy HPT so that you can monitor the low side fuel pressure and ethanol content.

I am running a Magnuson 2300 with 80mm pulley, NW 103mm tb, and a Roto-Fab Big Gulp. At my altitude, I see 11.5 psi of boost. I am running E85 out of the pump from Kum and Go which actually 66% ethanol. My low side is dropping on a long pull. I will be fixing that with a JMS.

If I were near sea level there is no way that I could run E66 with my mods.

03-25-2021, 08:49 AM	#11
7LitreC5 Drives: 18 Tahoe RST, 19 Z06 Join Date: Apr 2017 Location: Colorado Springs, CO Posts: 328	Max ethanol content for you is going to be different than most of the others here because of your altitude. You make less power so you can run more E%. I would recommend that you get a gauge (Banks will do it) or buy HPT so that you can monitor the low side fuel pressure and ethanol content. I am running a Magnuson 2300 with 80mm pulley, NW 103mm tb, and a Roto-Fab Big Gulp. At my altitude, I see 11.5 psi of boost. I am running E85 out of the pump from Kum and Go which actually 66% ethanol. My low side is dropping on a long pull. I will be fixing that with a JMS. If I were near sea level there is no way that I could run E66 with my mods.