E85 flex tune for 350

[superman07]

Also having tried equivalents of e15, and e30, they both are not even close to how the e50 feels. Despite using the E50 harder and in hotter temps the power is much more concrete across all RPM, But especially in street driving it is much more rounded.

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[65sohc]

If anything e85 would increase longevity. Ethanol burns much cleaner than gasoline. thus leaving minimal combustion chamber and valve deposits. According to Propel Fuels:

"Ethanol reduces tailpipe carbon monoxide emissions by 30%, reducing smog and air toxins, such as benzene, by 21%, and tailpipe particulate matter (PM 2.5) emissions by 50%. Ethanol is rapidly biodegradable in surface water, ground water and soil. Next-generation ethanol produced from cellulosic materials can offer even greater benefits with an 85% reduction in greenhouse gas emissions."

Here is an interesting comment by a Terminator guy from a couple years ago.

"Methanol and nitro both require a top lube since they are such a "dry" fuel.I use grape scented in the race car and have used it in my e-85.
Helps keep the valve guides lubricated in alcohol fuels,the e-85 isn't as dry as pure alc. but the cast iron guides in our 4 valve heads could use it. Especially since most of us have all but eliminated crankcase vapor from entering the intake with catch cans that actually helps lubricate the valve guides.
Race motors tend to need it more due to the complete lack of a pcv system ,therefore if you run catch cans on your car.I would highly recomend it."

Makes me think twice about having a catch can.

 

[superman07]

My car likes e50 better than e70-85. E50 has good torque, good drivability, ok mileage, and none of the single loud ass pops through the exhaust driving around on the street under mild load.

Anyone else daily driving e85 and the Lund flex tune for stock vehicle?

 

[65sohc]

What link

http://www.intercepteft.com/calc.html

 

[65sohc]

My car likes e50 better than e70-85. E50 has good torque, good drivability, ok mileage, and none of the single loud ass pops through the exhaust driving around on the street under mild load.

Anyone else daily driving e85 and the Lund flex tune for stock vehicle?

I am. I love it. I agree with your comment about the engine liking less than full e85. I am currently running e60 with flawless driveability and great power. Starting is also completely normal whereas at higher concentration cold starting takes an extra couple cranks and the engine stumbles once or twice.

 

[superman07]

I dont think the canned tune is perfect. I would love to add the CAI, TB, and ARH headers and have Lund dial it in. I might try remote tuning.

 

[65sohc]

It is the same tune Lund runs on his car.

 

[superman07]

Pretty sure he sold the car, it was for sale on Facebook, but I have no way to confirm one way or the other. I would be the canned tune is set to be safe, I would expect the ability to get more out of it with a dyno session or remote tuned for your car.

 

[olaosunt]

Low trap @drag strip with 100 octane /stock tune.

I need this tune badly .
I love drag racing and have a sub 10 second TT 2015 GT for that so was not really planning on taking my tech pack car to the drags much(if at all)
In part I was afraid of being disappointed as I expected it to trap 115-116' and run low 12's.
I know that is not what the car is meant for although I have no plans to "track" it either .
It is a fun street car that can be daily driven.From a roll or over 3500 rpm it feels as fast as some supercharged mustangs I have had .
(May be not my 850 rwhp 12 I traded for it)
It is also by far the meanest sounding car I have ever had .Even better than my 11 GT 500 with long tune headers

I had a set of drag radials(left over from my 12) on the car while I was repairing curb rash on one of my wheels.These were MT ET II drag radials mounted on my 19x 10 Ford racing SVT PP look alike wheels.The 19x9 fronts would not fit so I left the stock front/wheel tires on.
I was also still breaking in the newly built auto transmission on my TT 15 so I decided to take the GT 350 to the local drag strip here in Indy .
I primarily wanted to get a baseline trap rather than dyno while I wait for my Lund flex tune .
I had half a tank of VP 101 I had been running and butt dyno was telling me the car was faster(As you will see below I was wrong ...I hope as if not then 93 would be a bigger fail )

As I feared I was real rusty as I had been racing my auto cars for the last year .
My first "feeler " pass was a disaster -
I did a quick burn out using the line lock and felt the tires were sticky as I spun out of the box and staged .
I tried using the LC with the advance trac off- course it did not work(now I know) Car revved up to 6K on the line befor I let off and then car just bogged .
2.4 60 ft and ran [email protected]
Very embarrassing .....I am no hot shoe but not a noob either and ran my 12 before the autoswap to 10.3@138 banging gears and averaging high 1.5 60's

I tried again this time with the advance trac on and LC set to 4500
I side steppee the clutch but bogged again .It ran a little quicker @[email protected] or so ..
My third pass trying to slip the clutch was a little better @13.0 same trap but still 2.3 60 ft
4th time lucky as I really slipped the clutch and got a decent 1.9 60
Ft.I also decided to shift @ 8000(I had been shifting at 7500).Best of night was 12.4@112.
like I said I know the car was not built to drag race but i was surprised at how low it was trapping with a decent 1400 DA.
A 116 mph trap could have netted me a 12 flat or better with a decent 60
Ft .
I think the LC may work better with the street tired as it seems it did not like the sticky MT's
Car has 1400 miles and I just changed the oil .

Do I have a dog of a car?
Definitely hoping the flex tune can add some power and trap speed.

 

[superman07]

starting to think the ethanol percentage detection in our sensors is spotty.

 

[65sohc]

Based on what? Mine has been very consistent. As soon as I got my tune I topped off with about four gal. of e85. Ngauge read around e40. I have filled up with nothing but e85 since then, 5 or 6 tankfuls. Today I added 12 gal. to my previous e78 and I'm now at e81.6.

 

[65sohc]

superman07,
I just saw your post on the other thread so I see where you're coming from. Each time I fill up I just drive the car normally and wait for it to learn. I would think that the more dissimilar the fuel is that you're adding the longer it will take the pcm to learn.

 

[superman07]

I think the fact I top off frequently might be the difference, As a habit I normally do not run a whole tank out. As these cars were not flex fuel I think the learning function is too easily locked in, perhaps the fuel isn't mixing well in the tank. My father always preached never being low on Gas, maybe it was from the crisis in the 70s.

what I don't get is why doing a 3k rpm hold will cause the car to start dropping percentage, but letting it idle then causes the percentage to go back up, give it some rpm the percentage starts dropping again. its the same gas in the line at that point. I need to figure out where the sensor is.

perhaps the sensor is located by the pickup in the tank, the high rpm hold, or driving increases the volume pumped, perhaps mixing the fuel better. My car was not running great the last day or two, I might have had some partially phase separated crap siting at the bottom of the tank and not mixing. I don't know.

I Put 3 gallons in the car about 15 minutes ago, idling the percentage of course started going up from 69, not wanting a repeat of the car potentially learning a percentage I KNOW IS WAY TO HIGH I went to a 3k rpm hold. I have to feather the gas to actually keep it on 3k as the tune started to adjust slightly and the percentage dropped to 57, but locked in ridiculously fast.

I wonder if there is an upper bound on the time where it just locks in, I may try to see if disconnecting the battery will force a relearn.

for now I am going to try running tanks closer to e, hopefully it helps, I was running 10 gallons of e85 and 6 or 93 for a while. My car likes this the best.

 

[superman07]

[ame]

 

[VUDUGT350]

I've noticed a rough start up since switching to the flex fuel tune but the highest ethanol percentage I've gotten to is 77%. I also notice some hesitation when the car is still warming up in 1st and 2nd gears right before needing to shift during normal driving which I don't remember before the tune. However, after the car warms up to temp (usually 180-200) it goes away and runs like a champ. Not sure if anyone else has noticed this.

Interesting video about the ethanol sensor.

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