Making the LE5 a Flex Fuel engine... - Page 2 - Saturn Sky Forums: Saturn Sky Forum
Saturn Sky Performance Discussion Internal Engine | External Engine | Suspension | Exhaust | Upgrades and Aftermarket

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post #16 of 21 (permalink) Old 04-05-2019, 10:56 AM Thread Starter
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Originally Posted by christopher_2 View Post
My understanding is the sensor is a much better option. Wonder if the tables for our Sky is there just not editable at this time. Will be interesting to see what you come up with. If you need to do any comparison let me know I have turbo on mine also. Should be out of deep freeze storage in the next three weeks or so. I have access to E85 as soon as my warranty on my 2015 Cruze runs out going to go to E85.
A little update to this. Seems not all the E67s have the same flex fuel logic. Like what you said with your Cruze, I'm hearing from a VERY reliable source that we can add the sensor and make some changes in the stock LE5s ECM and run from E0 to E85 and it will do the blending!!!!

This opens up a whole new ballgame. F$#@ YEAH!

(I'm a little excited. With E85, 500 whp may be possible with the new build)
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post #17 of 21 (permalink) Old 09-30-2019, 04:12 PM
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Do you have any further details on this? I am looking at do this for a dirt-track application in N/A form on a Cobalt SS. I'm curious to see what has to be done to the PCM. I have HP Tuners and have been messing with LS-based truck engine swapped C10s for 2 years.now.
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post #18 of 21 (permalink) Old 10-01-2019, 11:48 AM Thread Starter
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Do you have any further details on this? I am looking at do this for a dirt-track application in N/A form on a Cobalt SS. I'm curious to see what has to be done to the PCM. I have HP Tuners and have been messing with LS-based truck engine swapped C10s for 2 years.now.
Not yet. First fire up of the engine should be this weekend. Sucks not having more time to work on it. Once we get it running, then we need to tune it on 91. Once that's done I can start messing with the E85.

I have got the sensor wired up mostly...have it tied into power, ground and the pin on the ECM...just need to wire in the pigtail once we figure out the exact position of the fuel rail so we can cut wires to the proper length and route them the right way. So getting closer.


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post #19 of 21 (permalink) Old 10-01-2019, 12:04 PM
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Have you got an update on this setup? I am looking at doing a flex fuel setup for a 2.4L Cobalt race car project, and I'm curious what has to be done otherwise with the software. Wiring a sensor up seems like the easy part... but I haven't dove into the software yet.
I have C1Pin5, a continental sensor 13577429 sensor and 13352241 pigtail to plumb inline.
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post #20 of 21 (permalink) Old 10-21-2019, 12:24 PM Thread Starter
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Originally Posted by MilestoneMotors View Post
Have you got an update on this setup? I am looking at doing a flex fuel setup for a 2.4L Cobalt race car project, and I'm curious what has to be done otherwise with the software. Wiring a sensor up seems like the easy part... but I haven't dove into the software yet.
I have C1Pin5, a continental sensor 13577429 sensor and 13352241 pigtail to plumb inline.


So a bit of an update to this. The sensor is in and wired. I just did the initial startup and the engine runs well but there are a couple other issues we need to sort out before driving it. Once we get there though, we are tuning it to 91 first then getting to the flex fuel tuning. So MilestoneMotors, no info yet on the tune, but will post it when we get there.
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post #21 of 21 (permalink) Old 10-28-2019, 11:42 AM
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Good stuff!
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