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E-85 on a stock 370z?
I have done some searches and have not come up with a concrete answer yet so here goes....Can you run E-85 in a 2010 370z? I have added Stillen Gen 3 CAI and ARK DT-S exhaust. It was originally tuned on 93 octane. Can I switch over to E-85 safely? Do I need an E-85 sensor kit? I was thinking of switching to E-85 if possible and having it retuned as I am about to add Berk Resonated Test Pipes. I read the owner's manual and it specifically says not to use E-85 but I wanted to ask people with more experience here who have already done this. Thanks in advance and apologies if I missed the answer in the existing E-85 threads.
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I just tuned a 100% stock 2015 roadster on E85 with ecutek, no mods except it had GTR injectors to provide the necessary fueling. The car used my software flexfuel programming that allows adjustment of ethanol content without the use of a sensor.
There is a dyno sheet if you scroll through, the car made 310 whp. https://www.instagram.com/p/CAV39eQHZcB/ |
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Specialty Z offers a flexfuel kit that would make it much easier, but you can have separate 93 and E85 maps and just switch, but you have to run it way down low before switching w/o that kit. |
I've been thinking about this, but my Z sits in the garage for the winter months. From what I hear, I would need to ensure there is no E85 in the tank during these periods.
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I'm surprised the stock fuel pump was able to provide enough volume. What was the maximum injector pulse width on E85 with the GT-R injectors? |
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I'm going to double check my fuel calculation to see how much reserve capacity the stock pump has for gasoline/stock injectors and E85 with 570cc (stock GT-rR) and 1050cc injectors. |
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If the temp varies widely, the tank can breathe and suck in some moisture with each breath. |
if I dont upgrade my car by this year, I might do e85 with gtr injector and flex fuel from specialty z
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I’m surprised that a stock 370z can handle E85 without any damage to the various fuel lines, seals and other plastic and rubber parts in the fuel system. It’s good to know if higher than 10% ethanol is ever mandated in Canada.
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So I switched over yesterday to try and test. I ran the car down to as far on empty as I could, which was no longer registering a distance on the miles till empty, filled it half way with E-85 and drive about 50 miles, then filled it back up to full with e85. This car is running fine, except it threw a code (U0164 Lost Communication With HVAC Control Module, CAN Communication Error) which I am not sure is at all related. What didn't happen as I expected, the OBD2 never changed from fuel_type = GAS. I would have expected it to switch to E85, Ethanol, or similar. How does the ECU know I am now on E85 and not 93 to use the different fuel map? I have not had it tuned on E85, obviously, and will do it after my Berk test pipe arrives Friday and is installed. Just curious if this is a workable situation or do I need to get one of the E85 kits from Zspeed, CZP, or Z1?
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The ECU has no idea what fuel type is in use, since the car isn't designed for it, it doesn't have a ethanol sensor. With the E85 in the tank and a stock ECU I would think the engine is running lean. The target air/fuel ratio (stoichiometric ratio) are very different: Gas 14.7:1, E85: 9.8:1 |
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The car is definitely running very lean at the moment, especially WOT as the car can correct up to 25% during idle/cruising but it will take a while for it to apply that to WOT fueling, and on top of it the injectors aren't big enough to go full throttle. I would estimate that you'll be doing permanent damage after a few pulls. |
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