# E-85 Roll Call

**URL:** <https://forums.speedlife.net/t/e-85-roll-call/243011>\
**Category:** Shift518 Automotive\
**Created:** [March 23, 2009, 2:29pm UTC](https://forums.speedlife.net/t/e-85-roll-call/243011 "2009-03-23T14:29:50Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![Art](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/art/32/6461_2.png) [@Art](https://forums.speedlife.net/u/Art)\
**Post date:** [March 23, 2009, 5:35pm UTC](https://forums.speedlife.net/t/e-85-roll-call/243011/12 "2009-03-23T17:35:55Z")

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> [@How can I get in the loop?](https://forums.speedlife.net/t/how-can-i-get-in-the-loop/16025/31):
>
> My 93oct map is already retarted but I was thinking about getting retuned on E85. +10psi base fuel pressure should give enough headroom (I think) to run 25-26psi and hit 130+ traps with more knock headroom than I have today.
> 
> I’ve heard that the stations constantly mess with the gas/alky mixture and fuel map tweaks are needed often to keep AFRs in check. Art have you noticed anything?

Stations dont mess with anything. Because of the high freezing point of straight E85 gas, gas stations receive deliveries of E70 in the winter, which has a much lower freezing point… ie - more gas, less ethonal.

I was tuned in the middle of winter when the gas stations run E70… so now that they are all running E85 I’m running pig-rich. Yeah ethonal is a little less regulated than gasoline, so just get a little more conservative tune than usual and you are fine.

STFU about gas mileage.

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