Quick E85 question

hurahn · 07-18-2016, 08:53 PM

With an EcuTek tune and appropriate flex fuel sensor will the ECU adjust for different fuel ratios automatically? Or do I have to run one or the other?

zer099 · 07-18-2016, 09:22 PM

With the proper EcuTek tune and mapping set-up you can run 93 (or 91, whatever they tune for) and everything between up to E85. You will have to tap into your EVAP sensor wire to send the signal from the flex fuel sensor to the ECU; and based on what it tells the ECU, if set up properly, it will pull the map for your ethanol percentage.

Just had this done last week and it's worked well so far.

hurahn · 07-18-2016, 10:16 PM

Aaahhhh okay. That clears things up. Thanks.

07-18-2016, 08:53 PM	#1 (permalink)
hurahn Base Member Join Date: Feb 2012 Location: NA Posts: 89 Drives: NA Rep Power: 13	Quick E85 question With an EcuTek tune and appropriate flex fuel sensor will the ECU adjust for different fuel ratios automatically? Or do I have to run one or the other?

07-18-2016, 09:22 PM	#2 (permalink)
zer099 Base Member Join Date: Oct 2015 Location: Dawsonville, GA Posts: 88 Drives: '98 200sx; '09 G37x Rep Power: 10	With the proper EcuTek tune and mapping set-up you can run 93 (or 91, whatever they tune for) and everything between up to E85. You will have to tap into your EVAP sensor wire to send the signal from the flex fuel sensor to the ECU; and based on what it tells the ECU, if set up properly, it will pull the map for your ethanol percentage. Just had this done last week and it's worked well so far. hurahn likes this. __________________ 2009 G37X \| 326 AWHP \| 264 AWTQ

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07-18-2016, 10:16 PM	#3 (permalink)
hurahn Base Member Join Date: Feb 2012 Location: NA Posts: 89 Drives: NA Rep Power: 13	Aaahhhh okay. That clears things up. Thanks.