E85 timing vs 93 octane
05-10-2014, 02:58 AM
#1
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E85 timing vs 93 octane
So here is a question for the smart folks here, once you have a dialed in 93 octane map, about how much more should you advance the ignition on E85? My ethanol map had 3* more in every cell compared to my 93 map but it otherwise identical. How can I optimize it, I feel like I'm leaving a lot of power on the table with such conservative ignition.
05-10-2014, 02:48 PM
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Im hoping to get fine tuned on a dyno soon. My 93 octane ignition map is pretty conservative also so I felt comfortable adding in 3* even though lots of what I have read from places other than rennlist Suggests that in boosted applicationa, e85 likes pump gas timing. What kind of timing are you e85 guys running at peak tq and hoq much boost? My retard curve is -1* for every 10 kpa boost which I know is very conservative and safe.
05-10-2014, 04:34 PM
#4
Rennlist Member
I will post my timing table in a bit. Just keep in mind I was able to push timing a bit more because of the extra stroke. Knock counter is a must IMO.
