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Oct 24, 2009, 01:34 PM
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#1
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Evolving Member
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Location: SoCal
Posts: 190
Drives: 06 GG Evo IX MR
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Map interpolation using a flex fuel composition sensor?
In a previous thread regarding E85 and the alt-map switching harness, mrfred wrote:
Quote:
Originally Posted by mrfred
It works great with the factory ECU, and its only going to get better. I found a spare ADC (0-5V signal) input on the factory ECU. A toggle switch is wired up so that this input sees either 0 V or 5 V. tephra has recoded the ECU so that the ECU will choose between two sets of maps depending on which voltage it reads at the this ADC input. The maps right now include timing, fuel, boost, and I believe injector scaling. We may expand this range of maps, and for sure we will eventually setup interpolation between the two maps based on input voltage so that a flex fuel composition sensor can be wired up the ECU to make the Evo a true flex fuel vehicle.
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Any idea if it is still planned to implement this feature?
Especially with the variation in ethanol content in the E85 available from E85 pumps, and with people switching back and forth between 91 & E85 leading to different composition mixes of 91 & E85, this feature would be pretty useful. Plus it would obviate the need to switch backwards and forwards between maps, accidentally running the wrong map etc.
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Oct 24, 2009, 06:29 PM
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#2
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Drives: Graphite Grey IX SE (88590015), '04 FZ1, Former: 35R Powered Eclipse GST, 6/4 TSi AWD, Bandit 600s
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Quote:
Originally Posted by SoCal Rally
In a previous thread regarding E85 and the alt-map switching harness, mrfred wrote:
Any idea if it is still planned to implement this feature?
Especially with the variation in ethanol content in the E85 available from E85 pumps, and with people switching back and forth between 91 & E85 leading to different composition mixes of 91 & E85, this feature would be pretty useful. Plus it would obviate the need to switch backwards and forwards between maps, accidentally running the wrong map etc.
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His mapping of the fuel routines was an initial step. Why create a new thread insted of bumping the old one?
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Corn Fed 365hp/360tq - AMS FMIC, AMS LICP+UICP, AMS Front lower motor mount, Megan O2, Megan DP, Perrin HFC, Fujitsubo RM01A Cat-back, Walbro 255, RC 1200cc Injectors, GSC S1 Cams, Ghetto 3" intake +AMSoil EA Filter
- Tephra V6, JDM MAP, Direct boost ctl w/ AEM solenoid, AMS Tuned
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Oct 25, 2009, 03:10 AM
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#3
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Quote:
Originally Posted by fostytou
His mapping of the fuel routines was an initial step.
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Not sure what / which thread you are referring to here.
Quote:
Originally Posted by fostytou
Why create a new thread instead of bumping the old one?
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'mrfred' post I quoted was taken out of a thread that is about 6 months old, and seemed more related to general E85 tuning rather than the specific question I am asking.
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Oct 25, 2009, 10:13 AM
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#4
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Evolved Member
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Posts: 1,753
Drives: Graphite Grey IX SE (88590015), '04 FZ1, Former: 35R Powered Eclipse GST, 6/4 TSi AWD, Bandit 600s
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Quote:
Originally Posted by SoCal Rally
Not sure what / which thread you are referring to here.
'mrfred' post I quoted was taken out of a thread that is about 6 months old, and seemed more related to general E85 tuning rather than the specific question I am asking.
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Advanced fuel control options
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old but on-topic: flex fuel on stock ECU coming soon...
__________________
Corn Fed 365hp/360tq - AMS FMIC, AMS LICP+UICP, AMS Front lower motor mount, Megan O2, Megan DP, Perrin HFC, Fujitsubo RM01A Cat-back, Walbro 255, RC 1200cc Injectors, GSC S1 Cams, Ghetto 3" intake +AMSoil EA Filter
- Tephra V6, JDM MAP, Direct boost ctl w/ AEM solenoid, AMS Tuned
- Pioneer DEH-P9790BT, 40GB iPod, 10W6V2, Alpine PDX-1.1000, Passport 8500 x50 Hardwired, AEM Tru-Boost (Guage only), Auto-dimming mirror, 35% Tint
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Oct 26, 2009, 06:36 AM
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#5
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EvoM Guru
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Location: Tri-Cities, WA
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Drives: Evo IX MR
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Now that v7 is done and have a stable base code layout to work from, I can begin work on the patch.
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Works drop-in :: AMS LICP :: English Racing ported EM and HS :: Titek v2 O2 :: Helix v2 DP :: MIL.SPEC 100 cps cat :: RRE Stealth Stainless :: Walbro :: FIC 1050s :: E85 :: self-tuned :: 26.5 psi :: 340wtq/375whp VDR 5.71 EvoM mode, 77°F
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Oct 26, 2009, 08:36 AM
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#6
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Evolving Member
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Excellent. Thanks!!
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