i put e85 in yesterday. still had 2 gallons of 93 in the tank. After some data logs i am spot on the AFR at .82-.83 which is 12:1 just like justing said. But i did noticed the knock sensors active so i pulled 3* back and datalog again but still had the knock sensors active. i do not hear any pinging so i dont whats going on but i will speak with justin today and see what he thinks. The car otherwise runs perfect. it might actually be a bit smoother than with my 93 octane tunes. the exhaust fumes do smell kind of funny lol it smells like a propane fork lift. anyways i will update on what justin says.
i put e85 in yesterday. still had 2 gallons of 93 in the tank. After some data logs i am spot on the AFR at .82-.83 which is 12:1 just like justing said. But i did noticed the knock sensors active so i pulled 3* back and datalog again but still had the knock sensors active. i do not hear any pinging so i dont whats going on but i will speak with justin today and see what he thinks. The car otherwise runs perfect. it might actually be a bit smoother than with my 93 octane tunes. the exhaust fumes do smell kind of funny lol it smells like a propane fork lift. anyways i will update on what justin says.
A question I would ask is if you still have control of global spark with the custom tune. In other words, is the timing actually retarding when you command it?
A question I would ask is if you still have control of global spark with the custom tune. In other words, is the timing actually retarding when you command it?
Yes I have comtrol of global spark. I can't think of why the knock sensors are going off. I don't even think is the blend because with 23* it shouldn't knock regular gas. I'm wondering if the e85 burn has a different frequenzy that is causing the sensors to go off. Or I have pre ignition. Maybe I will give it more timing today to see if it stops knocking because sometimes not enough timing will cause pre ignition on e85. I'm a bit confused.
Ok guys. I think im set now.. I still have the same tune as yesterday but set the timing back to how Justin had it set. I got a laptop from my sister and was able to get decent datalogs. I dont know the how the mixture of ethanol is. I suspect that its more like e70 than e85 because of the amount of 93 that I had in the tank when I filled up which if my math is right was about 11 to 12% 93 in the tank.
Okay I did two WOT runs third gear pulls and got no knock at 25*s of timing. AFR was .81-82 which is spot on! the fuel pump duty cycles reached a peak of 60%. I cant find the pid for injectors duty cycle but I think that they are enough for n/a. I guess that the truth will be told once I get a fresh tank of e85 and have a higher percentage of ethanol in the tank. The car pulls very strong and it feels like it has a little more bottom end. I think that once I get a new tank of fuel I should be able to add two degrees of timing. Justing said that 27 to 29* of timing is what he aims for on n/a e85 for this car. I am happy with the tune so far the car idles better than with my old 93 octane tune. Very very smooth.... I cant wait to get rid of this tank for a fresh fill up. I found the sunoco that has e85 which is closer than the shell that I filled up yesterday so that should make this switch even better. I hope to put the car on the rollers sometime next month to see what numbers I get and compare them to people runing 93 with my same mods. I will update once I get a new tank and more timing.:rockwoot::rockwoot:
Good stuff. I don't have a station close enough to me to be convenient with all the driving I do now but I will likely be getting a new job soon where I work from home so won't be filling up so often. Then I won't care that I have to drive a few extra miles to fill up and might try out an E85 tune.
They need to take that corn crap out of gas. Trust me we are all paying for it in other ways. Anything made with grain has went up double since everyone grows corn for fuel.
I buy over 10 million pounds of grain a year. Trust me I know what this did to food cost.
They need to take that corn crap out of gas. Trust me we are all paying for it in other ways. Anything made with grain has went up double since everyone grows corn for fuel.
I buy over 10 million pounds of grain a year. Trust me I know what this did to food cost.
They need to take that corn crap out of gas. Trust me we are all paying for it in other ways. Anything made with grain has went up double since everyone grows corn for fuel.
I buy over 10 million pounds of grain a year. Trust me I know what this did to food cost.
The most performance benefits with E85 are gained with an engine built to take advantage of the higher octane rating and cooling effects of the alcohol. This usually means a NA engine with 13:1 or higher compression ratio or a supercharged/turbocharged engine. A couple of years ago either Hot Rod or Car Craft magazine ran a good story on building engines for E85. They made some good power with both NA and supercharged setups. If I can find an online link to the story I'll post it here.
Ethanol contains about 30% fewer BTU's by volume than gasoline so mileage is significantly less than gasoline and requires a higher volume to be pumped into the engine than gasoline. Also, the optimum (stoichiometric) fuel/air ratio is different for ethanol than gasoline. In short, the advantages of E85 in an engine designed to run on pump gas are not fully realized without major modifications.
Thought I'd let you know I also joined the E85 club today. I loaded the Jon Lund E85 tune. The car is running smoother overall than with my previous Bama 93 race tune, but definitely roasts the tires through the first three gears. My next step is to datalog before anything else but my job will keep me from doing that for about 10 days.
I'm not planning on a dyno session, but will get back to the track when the weather cools off (probably somewhere around the beginning of October).
Thought I'd let you know I also joined the E85 club today. I loaded the Jon Lund E85 tune. The car is running smoother overall than with my previous Bama 93 race tune, but definitely roasts the tires through the first three gears. My next step is to datalog before anything else but my job will keep me from doing that for about 10 days.
I'm not planning on a dyno session, but will get back to the track when the weather cools off (probably somewhere around the beginning of October).
That's great mike! I'm glad you like the new fuel. So far I love it and I have not had any issues at all. On cold starts the engine will crank a turn or two more than it used to with 93 but that's normal. It will be a bit worse on cold weather I suspect. But that's the nature of the beast.
Up here in Minnesota, they have winter blend e85 which ends up being around e70. I probably won't run the mustang through the winter anyway as they use A LOT of salt on the roads. If I run it in the cold, I'll most likely switch back to 93.
Up here in Minnesota, they have winter blend e85 which ends up being around e70. I probably won't run the mustang through the winter anyway as they use A LOT of salt on the roads. If I run it in the cold, I'll most likely switch back to 93.
E70 does help for cold starts. You don't need to switch anything. The car will run a on the rich side. I wont switch back to 93 again. When I spray I will get a dedicated fuel system for nitrous so I don't have to worry about extra fuel require for a 150 or 200shot. E85+ nitroud = sex.
You guys must make alot more money than I do, no way I could risk voiding the warranty by using a fuel it specifically says not to use in the owner's manual.
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