# Anyone converted to corn?

**URL:** <https://forums.speedlife.net/t/anyone-converted-to-corn/200833>\
**Category:** PittSpeed Automotive\
**Created:** [November 25, 2008, 5:04pm UTC](https://forums.speedlife.net/t/anyone-converted-to-corn/200833 "2008-11-25T17:04:58Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![martin0660](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@martin0660](https://forums.speedlife.net/u/martin0660)\
**Post date:** [November 26, 2008, 12:04pm UTC](https://forums.speedlife.net/t/anyone-converted-to-corn/200833/14 "2008-11-26T12:04:01Z")

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> [@fwd sucks](https://forums.speedlife.net/t/fwd-sucks/38838/5):
>
> as far as cold start issues, my car isnt my daily driver, got the beat ass cavalier for the winter months so im not concerned about issues related to that. i know e85 comes in different blends as the seasons change, but i think the change is subtle enough for the ecu to compensate not to mention my car only gets driven in the warmer months. I may be wrong though. worst case scenario: run 93 in the fall and winter.

I only mention the “cold start issue” because they adjust the fuel to try and help it along. I know of two guys in eastern PA that had fits with it into late May this year because the change over is not clear cut (station fill to station fill), and then there is at least some speculation that they are over 15% gas a lot of the time (when they don’t have enough alky available). Possibly not a show stopper for you, but ran me away from it for now. Keep in mind the bulk of the E85 market is intended to offset gas usage, and they arent real concerned about those of us looking to it for octane. (more gas = less octane).

I’m not sure how the strategy is set up in the Mitsu stuff, but mine will not compensate enough for the fuel differences at WOT / high load situations. It can be tuned for closed loop, but above 3500 rpm or a specific load value I’m in open loop and running off tables only, so that is what stopped me. Without know what the fuel make-up is, I could never get the tune “right enough” to take advantage of the octane.

I keep watching others conversions myself, I tend to follow these types of things once the kinks are discovered rather than pioneer myself on something like this. I still hold out hope someone is going to make a more stand alone / affordable fuel ration sensor we can plug in to make this easier.

Good luck if you go this way, I will be watching for your results too.

Bob Myers

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